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46 results on '"Siribaddana, Sisira H."'

1. Educational attainment of same-sex and opposite-sex dizygotic twins: An individual-level pooled study of 19 twin cohorts

Author

Silventoinen, Karri, Bogl, Leonie H., Jelenkovic, Aline, Vuoksimaa, Eero, Latvala, Antti, Li, Weilong, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Ordoñana, Juan R., Sánchez-Romera, Juan F., Colodro-Conde, Lucia, Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Catharina E.M., Rebato, Esther, Corley, Robin P., Huibregtse, Brooke M., Hopper, John L., Tyler, Jessica, Duncan, Glen E., Buchwald, Dedra, Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Nelson, Tracy L., Whitfield, Keith E., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Heikkilä, Kauko, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J.F., Magnusson, Patrik K.E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Siribaddana, Sisira H., Rose, Richard J., Sørensen, Thorkild I.A., Boomsma, Dorret I., and Kaprio, Jaakko

Published
2021
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9. Genetic and environmental variation in educational attainment: an individual-based analysis of 28 twin cohorts

Author

Fisiología, Fisiologia, Silventoinen, Karri, Jelenkovic Moreno, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato Ochoa, Esther Matilde, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana Martín, Juan Ramón, Sánchez Romera, Juan Francisco, Colodro Conde, Lucía, Calais Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Pablo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., Kaprio, Jaakko, Fisiología, Fisiologia, Silventoinen, Karri, Jelenkovic Moreno, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato Ochoa, Esther Matilde, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana Martín, Juan Ramón, Sánchez Romera, Juan Francisco, Colodro Conde, Lucía, Calais Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Pablo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., and Kaprio, Jaakko

Abstract

We investigated the heritability of educational attainment and how it differed between birth cohorts and cultural-geographic regions. A classical twin design was applied to pooled data from 28 cohorts representing 16 countries and including 193,518 twins with information on educational attainment at 25 years of age or older. Genetic factors explained the major part of individual differences in educational attainment (heritability: a(2)=0.43; 0.41-0.44), but also environmental variation shared by co-twins was substantial (c(2)=0.31; 0.30-0.33). The proportions of educational variation explained by genetic and shared environmental factors did not differ between Europe, North America and Australia, and East Asia. When restricted to twins 30 years or older to confirm finalized education, the heritability was higher in the older cohorts born in 1900-1949 (a(2)=0.44; 0.41-0.46) than in the later cohorts born in 1950-1989 (a(2)=0.38; 0.36-0.40), with a corresponding lower influence of common environmental factors (c(2)=0.31; 0.29-0.33 and c(2)=0.34; 0.32-0.36, respectively). In conclusion, both genetic and environmental factors shared by co-twins have an important influence on individual differences in educational attainment. The effect of genetic factors on educational attainment has decreased from the cohorts born before to those born after the 1950s.

Published
2020

10. Genetic and environmental variation in educational attainment : an individual-based analysis of 28 twin cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato, Esther, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana, Juan R., Sánchez-Romera, Juan F., Colodro-Conde, Lucia, Calais-Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Paulo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato, Esther, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana, Juan R., Sánchez-Romera, Juan F., Colodro-Conde, Lucia, Calais-Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Paulo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., and Kaprio, Jaakko

Abstract

We investigated the heritability of educational attainment and how it differed between birth cohorts and cultural–geographic regions. A classical twin design was applied to pooled data from 28 cohorts representing 16 countries and including 193,518 twins with information on educational attainment at 25 years of age or older. Genetic factors explained the major part of individual differences in educational attainment (heritability: a2 = 0.43; 0.41–0.44), but also environmental variation shared by co-twins was substantial (c2 = 0.31; 0.30–0.33). The proportions of educational variation explained by genetic and shared environmental factors did not differ between Europe, North America and Australia, and East Asia. When restricted to twins 30 years or older to confirm finalized education, the heritability was higher in the older cohorts born in 1900–1949 (a2 = 0.44; 0.41–0.46) than in the later cohorts born in 1950–1989 (a2 = 0.38; 0.36–0.40), with a corresponding lower influence of common environmental factors (c2 = 0.31; 0.29–0.33 and c2 = 0.34; 0.32–0.36, respectively). In conclusion, both genetic and environmental factors shared by co-twins have an important influence on individual differences in educational attainment. The effect of genetic factors on educational attainment has decreased from the cohorts born before to those born after the 1950s., CC BY 4.0

Published
2020
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11. Genetic and environmental variation in educational attainment:an individual-based analysis of 28 twin cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato, Esther, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana, Juan R., Sánchez-Romera, Juan F., Colodro-Conde, Lucia, Calais-Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Paulo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J.F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K.E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Catharina E.M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I.A., Boomsma, Dorret I., Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato, Esther, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana, Juan R., Sánchez-Romera, Juan F., Colodro-Conde, Lucia, Calais-Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Paulo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J.F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K.E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Catharina E.M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I.A., Boomsma, Dorret I., and Kaprio, Jaakko

Abstract

We investigated the heritability of educational attainment and how it differed between birth cohorts and cultural–geographic regions. A classical twin design was applied to pooled data from 28 cohorts representing 16 countries and including 193,518 twins with information on educational attainment at 25 years of age or older. Genetic factors explained the major part of individual differences in educational attainment (heritability: a2 = 0.43; 0.41–0.44), but also environmental variation shared by co-twins was substantial (c2 = 0.31; 0.30–0.33). The proportions of educational variation explained by genetic and shared environmental factors did not differ between Europe, North America and Australia, and East Asia. When restricted to twins 30 years or older to confirm finalized education, the heritability was higher in the older cohorts born in 1900–1949 (a2 = 0.44; 0.41–0.46) than in the later cohorts born in 1950–1989 (a2 = 0.38; 0.36–0.40), with a corresponding lower influence of common environmental factors (c2 = 0.31; 0.29–0.33 and c2 = 0.34; 0.32–0.36, respectively). In conclusion, both genetic and environmental factors shared by co-twins have an important influence on individual differences in educational attainment. The effect of genetic factors on educational attainment has decreased from the cohorts born before to those born after the 1950s.

Published
2020

12. Genetic and environmental variation in educational attainment: an individual-based analysis of 28 twin cohorts

Author

Silventoinen, Karri, primary, Jelenkovic, Aline, additional, Sund, Reijo, additional, Latvala, Antti, additional, Honda, Chika, additional, Inui, Fujio, additional, Tomizawa, Rie, additional, Watanabe, Mikio, additional, Sakai, Norio, additional, Rebato, Esther, additional, Busjahn, Andreas, additional, Tyler, Jessica, additional, Hopper, John L., additional, Ordoñana, Juan R., additional, Sánchez-Romera, Juan F., additional, Colodro-Conde, Lucia, additional, Calais-Ferreira, Lucas, additional, Oliveira, Vinicius C., additional, Ferreira, Paulo H., additional, Medda, Emanuela, additional, Nisticò, Lorenza, additional, Toccaceli, Virgilia, additional, Derom, Catherine A., additional, Vlietinck, Robert F., additional, Loos, Ruth J. F., additional, Siribaddana, Sisira H., additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Duncan, Glen E., additional, Buchwald, Dedra, additional, Tynelius, Per, additional, Rasmussen, Finn, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Pang, Zengchang, additional, Magnusson, Patrik K. E., additional, Pedersen, Nancy L., additional, Dahl Aslan, Anna K., additional, Hwang, Amie E., additional, Mack, Thomas M., additional, Krueger, Robert F., additional, McGue, Matt, additional, Pahlen, Shandell, additional, Brandt, Ingunn, additional, Nilsen, Thomas S., additional, Harris, Jennifer R., additional, Martin, Nicholas G., additional, Medland, Sarah E., additional, Montgomery, Grant W., additional, Willemsen, Gonneke, additional, Bartels, Meike, additional, van Beijsterveldt, Catharina E. M., additional, Franz, Carol E., additional, Kremen, William S., additional, Lyons, Michael J., additional, Silberg, Judy L., additional, Maes, Hermine H., additional, Kandler, Christian, additional, Nelson, Tracy L., additional, Whitfield, Keith E., additional, Corley, Robin P., additional, Huibregtse, Brooke M., additional, Gatz, Margaret, additional, Butler, David A., additional, Tarnoki, Adam D., additional, Tarnoki, David L., additional, Park, Hang A., additional, Lee, Jooyeon, additional, Lee, Soo Ji, additional, Sung, Joohon, additional, Yokoyama, Yoshie, additional, Sørensen, Thorkild I. A., additional, Boomsma, Dorret I., additional, and Kaprio, Jaakko, additional

Published
2020
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16. Environmental exposures and their genetic or environmental contribution to depression and fatigue: a twin study in Sri Lanka

Author

Kovas Yulia, Sumathipala Athula, Siribaddana Sisira H, Ball Harriet A, Glozier Nick, McGuffin Peter, and Hotopf Matthew

Subjects
Psychiatry, RC435-571
Abstract

Abstract Background There is very little genetically informative research identifying true environmental risks for psychiatric conditions. These may be best explored in regions with diverse environmental exposures. The current study aimed to explore similarities and differences in such risks contributing to depression and fatigue. Methods Home interviews assessed depression (lifetime-ever), fatigue and environmental exposures in 4,024 randomly selected twins from a population-based register in the Colombo district of Sri Lanka. Results Early school leaving and standard of living showed environmentally-mediated effects on depression, in men. In women, life events were associated with depression partly through genetic pathways (however, the temporal order is consistent with life events being an outcome of depression, as well as the other way around). For fatigue, there were environmentally mediated effects (through early school leaving and life events) and strong suggestions of family-environmental influences. Conclusions Compared to previous studies from higher-income countries, novel environmentally-mediated risk factors for depression and fatigue were identified in Sri Lanka. But as seen elsewhere, the association between life events and depression was partially genetically mediated in women. These results have implications for understanding environmental mechanisms around the world.

Published
2010
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17. Toluene diisocyanate exposure in a glove manufacturing plant

Author

Siribaddana, Sisira H., Wijesundera, Anula, and Fernando, Ravindra

Subjects
Toluene diisocyanate -- Health aspects, Environmental issues, Health, Pharmaceuticals and cosmetics industries
Abstract

Case Report: An accidental exposure due to reuse of containers of toluene diisocyanate to transport nontoxic substances and subsequent occupational toxic exposure caused illness among forty workers in a glove manufacturing plant. Examination and investigation of the patients and factory site inspection were carried out. Toluene diisocyanate-contaminated latex was examined by the infrared spectroscopy. Thirty-two of forty patients had muscle pain and seven had elevated creatine phosphokinase activity. These features have not been reported previously as components of toluene diisocyanate toxicity and their underlying causation remains speculative., INTRODUCTION Accidental poisoning due to inappropriate storage and transport of toxic substances have been reported from developing countries including Sri Lanka. [1]The reuse of containers of toxic substances to store [...]

Published
1998

18. Colombo Twin and Singleton Study (CoTASS): A description of a population based twin study of mental disorders in Sri Lanka

Author

Dayaratne DARK, Kovas Yulia, Glozier Nick, Hewage Suwin N, Ball Harriet A, Siribaddana Sisira H, Sumathipala Athula, McGuffin Peter, and Hotopf Matthew

Subjects
Psychiatry, RC435-571
Abstract

Abstract Background The Sri Lankan twin registry is one of the first to be established in a developing country, and its design has ensured sampling from a wide range of environmental conditions. It thus has great potential to examine environmental and genetic influences on diverse phenotypes, including psychiatric disorders, in the context of a diversity of environmental exposures, which may not have been fully explored in previous twin studies in developed countries. This paper presents the rationale for the study, describes its context, and the methods for twin ascertainment and data collection. Methods A population-based twin register was established in the Colombo district of Sri Lanka using infrastructure designed to periodically update the electoral register. We invited a subsample from this register to participate in the project on common mental disorders, using random ascertainment. A separate non-twin sample was randomly selected from the geographical areas where twins were found. Home interviewers collected diagnostic information on common mental disorders, as well as environmental exposures including life events, socio-economic conditions, and the impact of the civil war and the Tsunami of 2004. Results We identified 19,302 individuals in the creation of the population based twin register. We randomly selected a subsample, of whom 4,387 were eligible to participate and 4,024 agreed to be interviewed (including data on 1,954 complete pairs of twins and 5 sets of triplets). Those who refused consent had a similar mean age and sex ratio to those who were interviewed. We invited 2,485 singletons to participate and 2,019 were interviewed. Conclusion Initial exploration of the data suggests the samples are very representative of the Colombo district of Sri Lanka, so we have created a unique resource for understanding the influences on mental disorders in developing countries, and to compare to the influences found in developed countries.

Published
2008
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21. Occupational Herbicide Exposure may Induce Kidney Injury Molecule I (KIM I) and Neutrophil Gelatinase-Associated Lipocalin (NGAL) Levels in Sugarcane Farmers in rural Sri Lanka

Author

Eakanayake, Dilini V., primary, Abdul, Khaja S. Mohammed, additional, A.K.G.Thakshila, Wanniarachchi, additional, Asanthi, Hewabandulage, additional, Jayasumana, Channa, additional, Jayasinghe, Sudheera S., additional, Chandana, Ediriweera P. S., additional, Siribaddana, Sisira. H., additional, and De Silva, Mangala C. S., additional

Published
2018
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22. Education in Twins and Their Parents Across Birth Cohorts Over 100 years : An Individual-Level Pooled Analysis of 42-Twin Cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Latvala, Antti, Sund, Reijo, Yokoyama, Yoshie, Ullemar, Vilhelmina, Almqvist, Catarina, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Kandler, Christian, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Rebato, Esther, Stazi, Maria A., Fagnani, Corrado, Brescianini, Sonia, Hur, Yoon-Mi, Jeong, Hoe-Uk, Cutler, Tessa L., Hopper, John L., Busjahn, Andreas, Saudino, Kimberly J., Ji, Fuling, Ning, Feng, Pang, Zengchang, Rose, Richard J., Koskenvuo, Markku, Heikkilae, Kauko, Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Sung, Joohon, Kim, Jina, Lee, Jooyeon, Lee, Sooji, Nelson, Tracy L., Whitfield, Keith E., Tan, Qihua, Zhang, Dongfeng, Llewellyn, Clare H., Fisher, Abigail, Burt, S. Alexandra, Klump, Kelly L., Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Medland, Sarah E., Martin, Nicholas G., Montgomery, Grant W., Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Corley, Robin P., Huibregtse, Brooke M., OEncel, Sevgi Y., Aliev, Fazil, Krueger, Robert F., Mcgue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Harris, Jennifer R., Brandt, Ingunn, Nilsen, Thomas S., Rasmussen, Finn, Tynelius, Per, Baker, Laura A., Tuvblad, Catherine, Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Gatz, Margaret, Butler, David A., Lichtenstein, Paul, Goldberg, Jack H., Harden, K. Paige, Tucker-Drob, Elliot M., Duncan, Glen E., Buchwald, Dedra, Tarnoki, Adam D., Tarnoki, David L., Franz, Carol E., Kremen, William S., Lyons, Michael J., Maia, Jose A., Freitas, Duarte L., Turkheimer, Eric, Sorensen, Thorkild I. A., Boomsma, Dorret I., Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Latvala, Antti, Sund, Reijo, Yokoyama, Yoshie, Ullemar, Vilhelmina, Almqvist, Catarina, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Kandler, Christian, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Rebato, Esther, Stazi, Maria A., Fagnani, Corrado, Brescianini, Sonia, Hur, Yoon-Mi, Jeong, Hoe-Uk, Cutler, Tessa L., Hopper, John L., Busjahn, Andreas, Saudino, Kimberly J., Ji, Fuling, Ning, Feng, Pang, Zengchang, Rose, Richard J., Koskenvuo, Markku, Heikkilae, Kauko, Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Sung, Joohon, Kim, Jina, Lee, Jooyeon, Lee, Sooji, Nelson, Tracy L., Whitfield, Keith E., Tan, Qihua, Zhang, Dongfeng, Llewellyn, Clare H., Fisher, Abigail, Burt, S. Alexandra, Klump, Kelly L., Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Medland, Sarah E., Martin, Nicholas G., Montgomery, Grant W., Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Corley, Robin P., Huibregtse, Brooke M., OEncel, Sevgi Y., Aliev, Fazil, Krueger, Robert F., Mcgue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Harris, Jennifer R., Brandt, Ingunn, Nilsen, Thomas S., Rasmussen, Finn, Tynelius, Per, Baker, Laura A., Tuvblad, Catherine, Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Gatz, Margaret, Butler, David A., Lichtenstein, Paul, Goldberg, Jack H., Harden, K. Paige, Tucker-Drob, Elliot M., Duncan, Glen E., Buchwald, Dedra, Tarnoki, Adam D., Tarnoki, David L., Franz, Carol E., Kremen, William S., Lyons, Michael J., Maia, Jose A., Freitas, Duarte L., Turkheimer, Eric, Sorensen, Thorkild I. A., Boomsma, Dorret I., and Kaprio, Jaakko

Abstract

Whether monozygotic (MZ) and dizygotic (DZ) twins differ from each other in a variety of phenotypes is important for genetic twin modeling and for inferences made from twin studies in general. We analyzed whether there were differences in individual, maternal and paternal education between MZ and DZ twins in a large pooled dataset. Information was gathered on individual education for 218,362 adult twins from 27 twin cohorts (53% females; 39% MZ twins), and on maternal and paternal education for 147,315 and 143,056 twins respectively, from 28 twin cohorts (52% females; 38% MZ twins). Together, we had information on individual or parental education from 42 twin cohorts representing 19 countries. The original education classifications were transformed to education years and analyzed using linear regression models. Overall, MZ males had 0.26 (95% CI [0.21, 0.31]) years and MZ females 0.17 (95% CI [0.12, 0.21]) years longer education than DZ twins. The zygosity difference became smaller in more recent birth cohorts for both males and females. Parental education was somewhat longer for fathers of DZ twins in cohorts born in 1990-1999 (0.16 years, 95% CI [0.08, 0.25]) and 2000 or later (0.11 years, 95% CI [0.00, 0.22]), compared with fathers of MZ twins. The results show that the years of both individual and parental education are largely similar in MZ and DZ twins. We suggest that the socio-economic differences between MZ and DZ twins are so small that inferences based upon genetic modeling of twin data are not affected.

Published
2017
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23. Does the sex of one’s co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts

Author

Fisiología, Genética, antropología física y fisiología animal, Fisiologia, Genetika,antropologia fisikoa eta animalien fisiologia, Bogl, Leonie H, Jelenkovic Moreno, Aline, Vuoksimaa, Eero, Ahrenfeldt, Linda, Pietiläinen, Kirsi H., Stazi, Maria A., Fagnani, Corrado, D’Ippolito, Cristina, Hur, Yoon-Mi, Jeong, Hoe-Uk, Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Cutler, Tessa L., Kandler, Christian, Jang, Kerry L., Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O., Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Derom, Catherine A., Vlietinck, Robert F., Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., McAdams, Tom A., Eley, Thalia C., Gregory, Alice M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Toos C. E. M., Pang, Zengchang, Tan, Qihua, Zhang, Dongfeng, Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Hjelmborg, Jacob v. B., Rebato Ochoa, Esther Matilde, Swan, Gary E., Krasnow, Ruth, Busjahn, Andreas, Lichtenstein, Paul, Öncel, Sevgi Y., Aliev, Fazil, Baker, Laura A., Tuvblad, Catherine, Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Ordoñana Martín, Juan Ramón, Sánchez Romera, Juan Francisco, Colodro Conde, Lucia, Duncan, Glen E., Buchwald, Dedra, Tarnoki, Adam D., Tarnoki, David L., Yokoyama, Yoshie, Hopper, John L., Loos, Ruth J. F., Boomsma, Dorret I., Sørensen, Thorkild I. A., Silventoinen, Karri, Kaprio, Jaakko, Fisiología, Genética, antropología física y fisiología animal, Fisiologia, Genetika,antropologia fisikoa eta animalien fisiologia, Bogl, Leonie H, Jelenkovic Moreno, Aline, Vuoksimaa, Eero, Ahrenfeldt, Linda, Pietiläinen, Kirsi H., Stazi, Maria A., Fagnani, Corrado, D’Ippolito, Cristina, Hur, Yoon-Mi, Jeong, Hoe-Uk, Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Cutler, Tessa L., Kandler, Christian, Jang, Kerry L., Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O., Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Derom, Catherine A., Vlietinck, Robert F., Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., McAdams, Tom A., Eley, Thalia C., Gregory, Alice M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Toos C. E. M., Pang, Zengchang, Tan, Qihua, Zhang, Dongfeng, Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Hjelmborg, Jacob v. B., Rebato Ochoa, Esther Matilde, Swan, Gary E., Krasnow, Ruth, Busjahn, Andreas, Lichtenstein, Paul, Öncel, Sevgi Y., Aliev, Fazil, Baker, Laura A., Tuvblad, Catherine, Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Ordoñana Martín, Juan Ramón, Sánchez Romera, Juan Francisco, Colodro Conde, Lucia, Duncan, Glen E., Buchwald, Dedra, Tarnoki, Adam D., Tarnoki, David L., Yokoyama, Yoshie, Hopper, John L., Loos, Ruth J. F., Boomsma, Dorret I., Sørensen, Thorkild I. A., Silventoinen, Karri, and Kaprio, Jaakko

Abstract

Background: The comparison of traits in twins from opposite-sex (OS) and same-sex (SS) dizygotic twin pairs is considered a proxy measure of prenatal hormone exposure. To examine possible prenatal hormonal influences on anthropometric traits, we compared mean height, body mass index (BMI), and the prevalence of being overweight or obese between men and women from OS and SS dizygotic twin pairs. Methods: The data were derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) database, and included 68,494 SS and 53,808 OS dizygotic twin individuals above the age of 20 years from 31 twin cohorts representing 19 countries. Zygosity was determined by questionnaires or DNA genotyping depending on the study. Multiple regression and logistic regression models adjusted for cohort, age, and birth year with the twin type as a predictor were carried out to compare height and BMI in twins from OS pairs with those from SS pairs and to calculate the adjusted odds ratios and 95% confidence intervals for being overweight or obese. Results: OS females were, on average, 0.31 cm (95% confidence interval (CI) 0.20, 0.41) taller than SS females. OS males were also, on average, taller than SS males, but this difference was only 0.14 cm (95% CI 0.02, 0.27). Mean BMI and the prevalence of overweight or obesity did not differ between males and females from SS and OS twin pairs. The statistically significant differences between OS and SS twins for height were small and appeared to reflect our large sample size rather than meaningful differences of public health relevance. Conclusions: We found no evidence to support the hypothesis that prenatal hormonal exposure or postnatal socialization (i.e., having grown up with a twin of the opposite sex) has a major impact on height and BMI in adulthood.

Published
2017

24. Differences in genetic and environmental variation in adult BMI by sex, age, time period, and region: an individual-based pooled analysis of 40 twin cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Yokoyama, Yoshie, Hur, Yoon-Mi, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Tomizawa, Rie, Pietiläinen, Kirsi H, Rissanen, Aila, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Piirtola, Maarit, Aaltonen, Sari, Öncel, Sevgi Y, Aliev, Fazil, Rebato, Esther, Hjelmborg, Jacob V B, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten Ohm, Silberg, Judy L, Eaves, Lindon J, Cutler, Tessa L, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Franz, Carol E, Kremen, William S, Lyons, Michael J, Busjahn, Andreas, Nelson, Tracy L, Whitfield, Keith E, Kandler, Christian, Jang, Kerry L, Gatz, Margaret, Butler, David A, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Duncan, Glen E, Buchwald, Dedra, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Jeong, Hoe-Uk, Swan, Gary E, Krasnow, Ruth, Magnusson, Patrik Ke, Pedersen, Nancy L, Dahl Aslan, Anna K, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Tynelius, Per, Baker, Laura A, Tuvblad, Catherine, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Spector, Timothy D, Mangino, Massimo, LaChance, Genevieve, Burt, S Alexandra, Klump, Kelly L, Harris, Jennifer R, Brandt, Ingunn, Nilsen, Thomas Sevenius, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Corley, Robin P, Huibregtse, Brooke M, Bartels, Meike, van Beijsterveldt, Catharina Em, Willemsen, Gonneke, Goldberg, Jack H, Rasmussen, Finn, Tarnoki, Adam D, Tarnoki, David L, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth Jf, Hopper, John L, Sung, Joohon, Maes, Hermine H, Turkheimer, Eric, Boomsma, Dorret I, Sørensen, Thorkild Ia, Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Yokoyama, Yoshie, Hur, Yoon-Mi, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Tomizawa, Rie, Pietiläinen, Kirsi H, Rissanen, Aila, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Piirtola, Maarit, Aaltonen, Sari, Öncel, Sevgi Y, Aliev, Fazil, Rebato, Esther, Hjelmborg, Jacob V B, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten Ohm, Silberg, Judy L, Eaves, Lindon J, Cutler, Tessa L, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Franz, Carol E, Kremen, William S, Lyons, Michael J, Busjahn, Andreas, Nelson, Tracy L, Whitfield, Keith E, Kandler, Christian, Jang, Kerry L, Gatz, Margaret, Butler, David A, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Duncan, Glen E, Buchwald, Dedra, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Jeong, Hoe-Uk, Swan, Gary E, Krasnow, Ruth, Magnusson, Patrik Ke, Pedersen, Nancy L, Dahl Aslan, Anna K, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Tynelius, Per, Baker, Laura A, Tuvblad, Catherine, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Spector, Timothy D, Mangino, Massimo, LaChance, Genevieve, Burt, S Alexandra, Klump, Kelly L, Harris, Jennifer R, Brandt, Ingunn, Nilsen, Thomas Sevenius, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Corley, Robin P, Huibregtse, Brooke M, Bartels, Meike, van Beijsterveldt, Catharina Em, Willemsen, Gonneke, Goldberg, Jack H, Rasmussen, Finn, Tarnoki, Adam D, Tarnoki, David L, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth Jf, Hopper, John L, Sung, Joohon, Maes, Hermine H, Turkheimer, Eric, Boomsma, Dorret I, Sørensen, Thorkild Ia, and Kaprio, Jaakko

Abstract

Background: Genes and the environment contribute to variation in adult body mass index [BMI (in kg/m(2))], but factors modifying these variance components are poorly understood.Objective: We analyzed genetic and environmental variation in BMI between men and women from young adulthood to old age from the 1940s to the 2000s and between cultural-geographic regions representing high (North America and Australia), moderate (Europe), and low (East Asia) prevalence of obesity.Design: We used genetic structural equation modeling to analyze BMI in twins ≥20 y of age from 40 cohorts representing 20 countries (140,379 complete twin pairs).Results: The heritability of BMI decreased from 0.77 (95% CI: 0.77, 0.78) and 0.75 (95% CI: 0.74, 0.75) in men and women 20-29 y of age to 0.57 (95% CI: 0.54, 0.60) and 0.59 (95% CI: 0.53, 0.65) in men 70-79 y of age and women 80 y of age, respectively. The relative influence of unique environmental factors correspondingly increased. Differences in the sets of genes affecting BMI in men and women increased from 20-29 to 60-69 y of age. Mean BMI and variances in BMI increased from the 1940s to the 2000s and were greatest in North America and Australia, followed by Europe and East Asia. However, heritability estimates were largely similar over measurement years and between regions. There was no evidence of environmental factors shared by co-twins affecting BMI.Conclusions: The heritability of BMI decreased and differences in the sets of genes affecting BMI in men and women increased from young adulthood to old age. The heritability of BMI was largely similar between cultural-geographic regions and measurement years, despite large differences in mean BMI and variances in BMI. Our results show a strong influence of genetic factors on BMI, especially in early adulthood, regardless of the obesity level in the population.

Published
2017
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25. Education in Twins and Their Parents Across Birth Cohorts Over 100 years:An Individual-Level Pooled Analysis of 42-Twin Cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Latvala, Antti, Sund, Reijo, Yokoyama, Yoshie, Ullemar, Vilhelmina, Almqvist, Catarina, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Kandler, Christian, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Rebato, Esther, Stazi, Maria A., Fagnani, Corrado, Brescianini, Sonia, Hur, Yoon-Mi, Jeong, Hoe-Uk, Cutler, Tessa L., Hopper, John L., Busjahn, Andreas, Saudino, Kimberly J., Ji, Fuling, Ning, Feng, Pang, Zengchang, Rose, Richard J., Koskenvuo, Markku, Heikkilae, Kauko, Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Sung, Joohon, Kim, Jina, Lee, Jooyeon, Lee, Sooji, Nelson, Tracy L., Whitfield, Keith E., Tan, Qihua, Zhang, Dongfeng, Llewellyn, Clare H., Fisher, Abigail, Burt, S. Alexandra, Klump, Kelly L., Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Medland, Sarah E., Martin, Nicholas G., Montgomery, Grant W., Magnusson, Patrik K. E., Pedersen, Nancy L., Aslan, Anna K. Dahl, Corley, Robin P., Huibregtse, Brooke M., OEncel, Sevgi Y., Aliev, Fazil, Krueger, Robert F., Mcgue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Harris, Jennifer R., Brandt, Ingunn, Nilsen, Thomas S., Rasmussen, Finn, Tynelius, Per, Baker, Laura A., Tuvblad, Catherine, Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Gatz, Margaret, Butler, David A., Lichtenstein, Paul, Goldberg, Jack H., Harden, K. Paige, Tucker-Drob, Elliot M., Duncan, Glen E., Buchwald, Dedra, Tarnoki, Adam D., Tarnoki, David L., Franz, Carol E., Kremen, William S., Lyons, Michael J., Maia, Jose A., Freitas, Duarte L., Turkheimer, Eric, Sørensen, Thorkild I. A., Boomsma, Dorret I., Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Latvala, Antti, Sund, Reijo, Yokoyama, Yoshie, Ullemar, Vilhelmina, Almqvist, Catarina, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Kandler, Christian, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Rebato, Esther, Stazi, Maria A., Fagnani, Corrado, Brescianini, Sonia, Hur, Yoon-Mi, Jeong, Hoe-Uk, Cutler, Tessa L., Hopper, John L., Busjahn, Andreas, Saudino, Kimberly J., Ji, Fuling, Ning, Feng, Pang, Zengchang, Rose, Richard J., Koskenvuo, Markku, Heikkilae, Kauko, Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Sung, Joohon, Kim, Jina, Lee, Jooyeon, Lee, Sooji, Nelson, Tracy L., Whitfield, Keith E., Tan, Qihua, Zhang, Dongfeng, Llewellyn, Clare H., Fisher, Abigail, Burt, S. Alexandra, Klump, Kelly L., Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Medland, Sarah E., Martin, Nicholas G., Montgomery, Grant W., Magnusson, Patrik K. E., Pedersen, Nancy L., Aslan, Anna K. Dahl, Corley, Robin P., Huibregtse, Brooke M., OEncel, Sevgi Y., Aliev, Fazil, Krueger, Robert F., Mcgue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Harris, Jennifer R., Brandt, Ingunn, Nilsen, Thomas S., Rasmussen, Finn, Tynelius, Per, Baker, Laura A., Tuvblad, Catherine, Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Gatz, Margaret, Butler, David A., Lichtenstein, Paul, Goldberg, Jack H., Harden, K. Paige, Tucker-Drob, Elliot M., Duncan, Glen E., Buchwald, Dedra, Tarnoki, Adam D., Tarnoki, David L., Franz, Carol E., Kremen, William S., Lyons, Michael J., Maia, Jose A., Freitas, Duarte L., Turkheimer, Eric, Sørensen, Thorkild I. A., Boomsma, Dorret I., and Kaprio, Jaakko

Abstract

Whether monozygotic (MZ) and dizygotic (DZ) twins differ from each other in a variety of phenotypes is important for genetic twin modeling and for inferences made from twin studies in general. We analyzed whether there were differences in individual, maternal and paternal education between MZ and DZ twins in a large pooled dataset. Information was gathered on individual education for 218,362 adult twins from 27 twin cohorts (53% females; 39% MZ twins), and on maternal and paternal education for 147,315 and 143,056 twins respectively, from 28 twin cohorts (52% females; 38% MZ twins). Together, we had information on individual or parental education from 42 twin cohorts representing 19 countries. The original education classifications were transformed to education years and analyzed using linear regression models. Overall, MZ males had 0.26 (95% CI [0.21, 0.31]) years and MZ females 0.17 (95% CI [0.12, 0.21]) years longer education than DZ twins. The zygosity difference became smaller in more recent birth cohorts for both males and females. Parental education was somewhat longer for fathers of DZ twins in cohorts born in 1990–1999 (0.16 years, 95% CI [0.08, 0.25]) and 2000 or later (0.11 years, 95% CI [0.00, 0.22]), compared with fathers of MZ twins. The results show that the years of both individual and parental education are largely similar in MZ and DZ twins. We suggest that the socio-economic differences between MZ and DZ twins are so small that inferences based upon genetic modeling of twin data are not affected.

Published
2017

26. Does the sex of one's co-twin affect height and BMI in adulthood?:A study of dizygotic adult twins from 31 cohorts

Author

Bogl, Leonie H, Jelenkovic, Aline, Vuoksimaa, Eero, Ahrenfeldt, Linda, Pietiläinen, Kirsi H, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Hur, Yoon-Mi, Jeong, Hoe-Uk, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Cutler, Tessa L, Kandler, Christian, Jang, Kerry L, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Derom, Catherine A, Vlietinck, Robert F, Nelson, Tracy L, Whitfield, Keith E, Corley, Robin P, Huibregtse, Brooke M, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Toos C E M, Pang, Zengchang, Tan, Qihua, Zhang, Dongfeng, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Hjelmborg, Jacob V B, Rebato, Esther, Swan, Gary E, Krasnow, Ruth, Busjahn, Andreas, Lichtenstein, Paul, Öncel, Sevgi Y, Aliev, Fazil, Baker, Laura A, Tuvblad, Catherine, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Magnusson, Patrik K E, Pedersen, Nancy L, Aslan, Anna K Dahl, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Duncan, Glen E, Buchwald, Dedra, Tarnoki, Adam D, Tarnoki, David L, Yokoyama, Yoshie, Hopper, John L, Loos, Ruth J F, Boomsma, Dorret I, Sørensen, Thorkild I A, Silventoinen, Karri, Kaprio, Jaakko, Bogl, Leonie H, Jelenkovic, Aline, Vuoksimaa, Eero, Ahrenfeldt, Linda, Pietiläinen, Kirsi H, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Hur, Yoon-Mi, Jeong, Hoe-Uk, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Cutler, Tessa L, Kandler, Christian, Jang, Kerry L, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Derom, Catherine A, Vlietinck, Robert F, Nelson, Tracy L, Whitfield, Keith E, Corley, Robin P, Huibregtse, Brooke M, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Toos C E M, Pang, Zengchang, Tan, Qihua, Zhang, Dongfeng, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Hjelmborg, Jacob V B, Rebato, Esther, Swan, Gary E, Krasnow, Ruth, Busjahn, Andreas, Lichtenstein, Paul, Öncel, Sevgi Y, Aliev, Fazil, Baker, Laura A, Tuvblad, Catherine, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Magnusson, Patrik K E, Pedersen, Nancy L, Aslan, Anna K Dahl, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Duncan, Glen E, Buchwald, Dedra, Tarnoki, Adam D, Tarnoki, David L, Yokoyama, Yoshie, Hopper, John L, Loos, Ruth J F, Boomsma, Dorret I, Sørensen, Thorkild I A, Silventoinen, Karri, and Kaprio, Jaakko

Abstract

BACKGROUND: The comparison of traits in twins from opposite-sex (OS) and same-sex (SS) dizygotic twin pairs is considered a proxy measure of prenatal hormone exposure. To examine possible prenatal hormonal influences on anthropometric traits, we compared mean height, body mass index (BMI), and the prevalence of being overweight or obese between men and women from OS and SS dizygotic twin pairs.METHODS: The data were derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) database, and included 68,494 SS and 53,808 OS dizygotic twin individuals above the age of 20 years from 31 twin cohorts representing 19 countries. Zygosity was determined by questionnaires or DNA genotyping depending on the study. Multiple regression and logistic regression models adjusted for cohort, age, and birth year with the twin type as a predictor were carried out to compare height and BMI in twins from OS pairs with those from SS pairs and to calculate the adjusted odds ratios and 95% confidence intervals for being overweight or obese.RESULTS: OS females were, on average, 0.31 cm (95% confidence interval (CI) 0.20, 0.41) taller than SS females. OS males were also, on average, taller than SS males, but this difference was only 0.14 cm (95% CI 0.02, 0.27). Mean BMI and the prevalence of overweight or obesity did not differ between males and females from SS and OS twin pairs. The statistically significant differences between OS and SS twins for height were small and appeared to reflect our large sample size rather than meaningful differences of public health relevance.CONCLUSIONS: We found no evidence to support the hypothesis that prenatal hormonal exposure or postnatal socialization (i.e., having grown up with a twin of the opposite sex) has a major impact on height and BMI in adulthood.

Published
2017

27. Differences in genetic and environmental variation in adult BMI by sex, age, time period, and region:an individual-based pooled analysis of 40 twin cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Yokoyama, Yoshie, Hur, Yoon-Mi, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Tomizawa, Rie, Pietiläinen, Kirsi H, Rissanen, Aila, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Piirtola, Maarit, Aaltonen, Sari, Öncel, Sevgi Y, Aliev, Fazil, Rebato, Esther, Hjelmborg, Jacob B, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Silberg, Judy L, Eaves, Lindon J, Cutler, Tessa L, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Franz, Carol E, Kremen, William S, Lyons, Michael J, Busjahn, Andreas, Nelson, Tracy L, Whitfield, Keith E, Kandler, Christian, Jang, Kerry L, Gatz, Margaret, Butler, David A, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Duncan, Glen E, Buchwald, Dedra, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Jeong, Hoe-Uk, Swan, Gary E, Krasnow, Ruth, Magnusson, Patrik Ke, Pedersen, Nancy L, Dahl Aslan, Anna K, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Tynelius, Per, Baker, Laura A, Tuvblad, Catherine, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Spector, Timothy D, Mangino, Massimo, Lachance, Genevieve, Burt, S Alexandra, Klump, Kelly L, Harris, Jennifer R, Brandt, Ingunn, Nilsen, Thomas S, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Corley, Robin P, Huibregtse, Brooke M, Bartels, Meike, van Beijsterveldt, Catharina Em, Willemsen, Gonneke, Goldberg, Jack H, Rasmussen, Finn, Tarnoki, Adam D, Tarnoki, David L, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth Jf, Hopper, John L, Sung, Joohon, Maes, Hermine H, Turkheimer, Eric, Boomsma, Dorret I, Sørensen, Thorkild Ia, Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Yokoyama, Yoshie, Hur, Yoon-Mi, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Tomizawa, Rie, Pietiläinen, Kirsi H, Rissanen, Aila, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Piirtola, Maarit, Aaltonen, Sari, Öncel, Sevgi Y, Aliev, Fazil, Rebato, Esther, Hjelmborg, Jacob B, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Silberg, Judy L, Eaves, Lindon J, Cutler, Tessa L, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Franz, Carol E, Kremen, William S, Lyons, Michael J, Busjahn, Andreas, Nelson, Tracy L, Whitfield, Keith E, Kandler, Christian, Jang, Kerry L, Gatz, Margaret, Butler, David A, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Duncan, Glen E, Buchwald, Dedra, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Jeong, Hoe-Uk, Swan, Gary E, Krasnow, Ruth, Magnusson, Patrik Ke, Pedersen, Nancy L, Dahl Aslan, Anna K, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Tynelius, Per, Baker, Laura A, Tuvblad, Catherine, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Spector, Timothy D, Mangino, Massimo, Lachance, Genevieve, Burt, S Alexandra, Klump, Kelly L, Harris, Jennifer R, Brandt, Ingunn, Nilsen, Thomas S, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Corley, Robin P, Huibregtse, Brooke M, Bartels, Meike, van Beijsterveldt, Catharina Em, Willemsen, Gonneke, Goldberg, Jack H, Rasmussen, Finn, Tarnoki, Adam D, Tarnoki, David L, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth Jf, Hopper, John L, Sung, Joohon, Maes, Hermine H, Turkheimer, Eric, Boomsma, Dorret I, Sørensen, Thorkild Ia, and Kaprio, Jaakko

Abstract

Background: Genes and the environment contribute to variation in adult body mass index [BMI (in kg/m(2))], but factors modifying these variance components are poorly understood.Objective: We analyzed genetic and environmental variation in BMI between men and women from young adulthood to old age from the 1940s to the 2000s and between cultural-geographic regions representing high (North America and Australia), moderate (Europe), and low (East Asia) prevalence of obesity.Design: We used genetic structural equation modeling to analyze BMI in twins ≥20 y of age from 40 cohorts representing 20 countries (140,379 complete twin pairs).Results: The heritability of BMI decreased from 0.77 (95% CI: 0.77, 0.78) and 0.75 (95% CI: 0.74, 0.75) in men and women 20-29 y of age to 0.57 (95% CI: 0.54, 0.60) and 0.59 (95% CI: 0.53, 0.65) in men 70-79 y of age and women 80 y of age, respectively. The relative influence of unique environmental factors correspondingly increased. Differences in the sets of genes affecting BMI in men and women increased from 20-29 to 60-69 y of age. Mean BMI and variances in BMI increased from the 1940s to the 2000s and were greatest in North America and Australia, followed by Europe and East Asia. However, heritability estimates were largely similar over measurement years and between regions. There was no evidence of environmental factors shared by co-twins affecting BMI.Conclusions: The heritability of BMI decreased and differences in the sets of genes affecting BMI in men and women increased from young adulthood to old age. The heritability of BMI was largely similar between cultural-geographic regions and measurement years, despite large differences in mean BMI and variances in BMI. Our results show a strong influence of genetic factors on BMI, especially in early adulthood, regardless of the obesity level in the population.

Published
2017

28. Education in Twins and Their Parents Across Birth Cohorts Over 100 years: An Individual-Level Pooled Analysis of 42-Twin Cohorts

Author

Silventoinen, Karri, primary, Jelenkovic, Aline, additional, Latvala, Antti, additional, Sund, Reijo, additional, Yokoyama, Yoshie, additional, Ullemar, Vilhelmina, additional, Almqvist, Catarina, additional, Derom, Catherine A., additional, Vlietinck, Robert F., additional, Loos, Ruth J. F., additional, Kandler, Christian, additional, Honda, Chika, additional, Inui, Fujio, additional, Iwatani, Yoshinori, additional, Watanabe, Mikio, additional, Rebato, Esther, additional, Stazi, Maria A., additional, Fagnani, Corrado, additional, Brescianini, Sonia, additional, Hur, Yoon-Mi, additional, Jeong, Hoe-Uk, additional, Cutler, Tessa L., additional, Hopper, John L., additional, Busjahn, Andreas, additional, Saudino, Kimberly J., additional, Ji, Fuling, additional, Ning, Feng, additional, Pang, Zengchang, additional, Rose, Richard J., additional, Koskenvuo, Markku, additional, Heikkilä, Kauko, additional, Cozen, Wendy, additional, Hwang, Amie E., additional, Mack, Thomas M., additional, Siribaddana, Sisira H., additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Sung, Joohon, additional, Kim, Jina, additional, Lee, Jooyeon, additional, Lee, Sooji, additional, Nelson, Tracy L., additional, Whitfield, Keith E., additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Llewellyn, Clare H., additional, Fisher, Abigail, additional, Burt, S. Alexandra, additional, Klump, Kelly L., additional, Knafo-Noam, Ariel, additional, Mankuta, David, additional, Abramson, Lior, additional, Medland, Sarah E., additional, Martin, Nicholas G., additional, Montgomery, Grant W., additional, Magnusson, Patrik K. E., additional, Pedersen, Nancy L., additional, Dahl Aslan, Anna K., additional, Corley, Robin P., additional, Huibregtse, Brooke M., additional, Öncel, Sevgi Y., additional, Aliev, Fazil, additional, Krueger, Robert F., additional, McGue, Matt, additional, Pahlen, Shandell, additional, Willemsen, Gonneke, additional, Bartels, Meike, additional, van Beijsterveldt, Catharina E. M., additional, Silberg, Judy L., additional, Eaves, Lindon J., additional, Maes, Hermine H., additional, Harris, Jennifer R., additional, Brandt, Ingunn, additional, Nilsen, Thomas S., additional, Rasmussen, Finn, additional, Tynelius, Per, additional, Baker, Laura A., additional, Tuvblad, Catherine, additional, Ordoñana, Juan R., additional, Sánchez-Romera, Juan F., additional, Colodro-Conde, Lucia, additional, Gatz, Margaret, additional, Butler, David A., additional, Lichtenstein, Paul, additional, Goldberg, Jack H., additional, Harden, K. Paige, additional, Tucker-Drob, Elliot M., additional, Duncan, Glen E., additional, Buchwald, Dedra, additional, Tarnoki, Adam D., additional, Tarnoki, David L., additional, Franz, Carol E., additional, Kremen, William S., additional, Lyons, Michael J., additional, Maia, José A., additional, Freitas, Duarte L., additional, Turkheimer, Eric, additional, Sørensen, Thorkild I. A., additional, Boomsma, Dorret I., additional, and Kaprio, Jaakko, additional

Published
2017
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29. Differences in genetic and environmental variation in adult BMI by sex, age, time period, and region: an individual-based pooled analysis of 40 twin cohorts

Author

Silventoinen, Karri, primary, Jelenkovic, Aline, additional, Sund, Reijo, additional, Yokoyama, Yoshie, additional, Hur, Yoon-Mi, additional, Cozen, Wendy, additional, Hwang, Amie E, additional, Mack, Thomas M, additional, Honda, Chika, additional, Inui, Fujio, additional, Iwatani, Yoshinori, additional, Watanabe, Mikio, additional, Tomizawa, Rie, additional, Pietiläinen, Kirsi H, additional, Rissanen, Aila, additional, Siribaddana, Sisira H, additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Pang, Zengchang, additional, Piirtola, Maarit, additional, Aaltonen, Sari, additional, Öncel, Sevgi Y, additional, Aliev, Fazil, additional, Rebato, Esther, additional, Hjelmborg, Jacob B, additional, Christensen, Kaare, additional, Skytthe, Axel, additional, Kyvik, Kirsten O, additional, Silberg, Judy L, additional, Eaves, Lindon J, additional, Cutler, Tessa L, additional, Ordoñana, Juan R, additional, Sánchez-Romera, Juan F, additional, Colodro-Conde, Lucia, additional, Song, Yun-Mi, additional, Yang, Sarah, additional, Lee, Kayoung, additional, Franz, Carol E, additional, Kremen, William S, additional, Lyons, Michael J, additional, Busjahn, Andreas, additional, Nelson, Tracy L, additional, Whitfield, Keith E, additional, Kandler, Christian, additional, Jang, Kerry L, additional, Gatz, Margaret, additional, Butler, David A, additional, Stazi, Maria A, additional, Fagnani, Corrado, additional, D’Ippolito, Cristina, additional, Duncan, Glen E, additional, Buchwald, Dedra, additional, Martin, Nicholas G, additional, Medland, Sarah E, additional, Montgomery, Grant W, additional, Jeong, Hoe-Uk, additional, Swan, Gary E, additional, Krasnow, Ruth, additional, Magnusson, Patrik KE, additional, Pedersen, Nancy L, additional, Dahl Aslan, Anna K, additional, McAdams, Tom A, additional, Eley, Thalia C, additional, Gregory, Alice M, additional, Tynelius, Per, additional, Baker, Laura A, additional, Tuvblad, Catherine, additional, Bayasgalan, Gombojav, additional, Narandalai, Danshiitsoodol, additional, Spector, Timothy D, additional, Mangino, Massimo, additional, Lachance, Genevieve, additional, Burt, S Alexandra, additional, Klump, Kelly L, additional, Harris, Jennifer R, additional, Brandt, Ingunn, additional, Nilsen, Thomas S, additional, Krueger, Robert F, additional, McGue, Matt, additional, Pahlen, Shandell, additional, Corley, Robin P, additional, Huibregtse, Brooke M, additional, Bartels, Meike, additional, van Beijsterveldt, Catharina EM, additional, Willemsen, Gonneke, additional, Goldberg, Jack H, additional, Rasmussen, Finn, additional, Tarnoki, Adam D, additional, Tarnoki, David L, additional, Derom, Catherine A, additional, Vlietinck, Robert F, additional, Loos, Ruth JF, additional, Hopper, John L, additional, Sung, Joohon, additional, Maes, Hermine H, additional, Turkheimer, Eric, additional, Boomsma, Dorret I, additional, Sørensen, Thorkild IA, additional, and Kaprio, Jaakko, additional

Published
2017
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30. Does the sex of one’s co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts

Author

Bogl, Leonie H., primary, Jelenkovic, Aline, additional, Vuoksimaa, Eero, additional, Ahrenfeldt, Linda, additional, Pietiläinen, Kirsi H., additional, Stazi, Maria A., additional, Fagnani, Corrado, additional, D’Ippolito, Cristina, additional, Hur, Yoon-Mi, additional, Jeong, Hoe-Uk, additional, Silberg, Judy L., additional, Eaves, Lindon J., additional, Maes, Hermine H., additional, Bayasgalan, Gombojav, additional, Narandalai, Danshiitsoodol, additional, Cutler, Tessa L., additional, Kandler, Christian, additional, Jang, Kerry L., additional, Christensen, Kaare, additional, Skytthe, Axel, additional, Kyvik, Kirsten O., additional, Cozen, Wendy, additional, Hwang, Amie E., additional, Mack, Thomas M., additional, Derom, Catherine A., additional, Vlietinck, Robert F., additional, Nelson, Tracy L., additional, Whitfield, Keith E., additional, Corley, Robin P., additional, Huibregtse, Brooke M., additional, McAdams, Tom A., additional, Eley, Thalia C., additional, Gregory, Alice M., additional, Krueger, Robert F., additional, McGue, Matt, additional, Pahlen, Shandell, additional, Willemsen, Gonneke, additional, Bartels, Meike, additional, van Beijsterveldt, Toos C. E. M., additional, Pang, Zengchang, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Martin, Nicholas G., additional, Medland, Sarah E., additional, Montgomery, Grant W., additional, Hjelmborg, Jacob v. B., additional, Rebato, Esther, additional, Swan, Gary E., additional, Krasnow, Ruth, additional, Busjahn, Andreas, additional, Lichtenstein, Paul, additional, Öncel, Sevgi Y., additional, Aliev, Fazil, additional, Baker, Laura A., additional, Tuvblad, Catherine, additional, Siribaddana, Sisira H., additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Magnusson, Patrik K. E., additional, Pedersen, Nancy L., additional, Aslan, Anna K. Dahl, additional, Ordoñana, Juan R., additional, Sánchez-Romera, Juan F., additional, Colodro-Conde, Lucia, additional, Duncan, Glen E., additional, Buchwald, Dedra, additional, Tarnoki, Adam D., additional, Tarnoki, David L., additional, Yokoyama, Yoshie, additional, Hopper, John L., additional, Loos, Ruth J. F., additional, Boomsma, Dorret I., additional, Sørensen, Thorkild I. A., additional, Silventoinen, Karri, additional, and Kaprio, Jaakko, additional

Published
2017
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31. Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994

Author

Jelenkovic, Aline, primary, Hur, Yoon-Mi, additional, Sund, Reijo, additional, Yokoyama, Yoshie, additional, Siribaddana, Sisira H, additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Pang, Zengchang, additional, Aaltonen, Sari, additional, Heikkilä, Kauko, additional, Öncel, Sevgi Y, additional, Aliev, Fazil, additional, Rebato, Esther, additional, Tarnoki, Adam D, additional, Tarnoki, David L, additional, Christensen, Kaare, additional, Skytthe, Axel, additional, Kyvik, Kirsten O, additional, Silberg, Judy L, additional, Eaves, Lindon J, additional, Maes, Hermine H, additional, Cutler, Tessa L, additional, Hopper, John L, additional, Ordoñana, Juan R, additional, Sánchez-Romera, Juan F, additional, Colodro-Conde, Lucia, additional, Cozen, Wendy, additional, Hwang, Amie E, additional, Mack, Thomas M, additional, Sung, Joohon, additional, Song, Yun-Mi, additional, Yang, Sarah, additional, Lee, Kayoung, additional, Franz, Carol E, additional, Kremen, William S, additional, Lyons, Michael J, additional, Busjahn, Andreas, additional, Nelson, Tracy L, additional, Whitfield, Keith E, additional, Kandler, Christian, additional, Jang, Kerry L, additional, Gatz, Margaret, additional, Butler, David A, additional, Stazi, Maria A, additional, Fagnani, Corrado, additional, D'Ippolito, Cristina, additional, Duncan, Glen E, additional, Buchwald, Dedra, additional, Derom, Catherine A, additional, Vlietinck, Robert F, additional, Loos, Ruth JF, additional, Martin, Nicholas G, additional, Medland, Sarah E, additional, Montgomery, Grant W, additional, Jeong, Hoe-Uk, additional, Swan, Gary E, additional, Krasnow, Ruth, additional, Magnusson, Patrik KE, additional, Pedersen, Nancy L, additional, Dahl-Aslan, Anna K, additional, McAdams, Tom A, additional, Eley, Thalia C, additional, Gregory, Alice M, additional, Tynelius, Per, additional, Baker, Laura A, additional, Tuvblad, Catherine, additional, Bayasgalan, Gombojav, additional, Narandalai, Danshiitsoodol, additional, Lichtenstein, Paul, additional, Spector, Timothy D, additional, Mangino, Massimo, additional, Lachance, Genevieve, additional, Bartels, Meike, additional, van Beijsterveldt, Toos CEM, additional, Willemsen, Gonneke, additional, Burt, S Alexandra, additional, Klump, Kelly L, additional, Harris, Jennifer R, additional, Brandt, Ingunn, additional, Nilsen, Thomas Sevenius, additional, Krueger, Robert F, additional, McGue, Matt, additional, Pahlen, Shandell, additional, Corley, Robin P, additional, Hjelmborg, Jacob v B, additional, Goldberg, Jack H, additional, Iwatani, Yoshinori, additional, Watanabe, Mikio, additional, Honda, Chika, additional, Inui, Fujio, additional, Rasmussen, Finn, additional, Huibregtse, Brooke M, additional, Boomsma, Dorret I, additional, Sørensen, Thorkild I A, additional, Kaprio, Jaakko, additional, and Silventoinen, Karri, additional

Published
2016
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32. Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994

Author

Jelenkovic, Aline, Hur, Yoon-Mi, Sund, Reijo, Yokoyama, Yoshie, Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Aaltonen, Sari, Heikkila, Kauko, Oncel, Sevgi Y., Aliev, Fazil, Rebato, Esther, Tarnoki, Adam D., Tarnoki, David L., Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O., Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Cutler, Tessa L., Hopper, John L., Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Sun, Joohon, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Franz, Carol E., Kremen, William S., Lyons, Michael J., Busjahn, Andreas, Nelson, Tracy L., Whitfield, Keith E., Kandler, Christian, Jang, Kerry L., Gatz, Margaret, Butler, David A., Stazi, Maria A., Fagnani, Corrado, D'Ippolito, Cristina, Duncan, Glen E., Buchwald, Dedra, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Jeong, Hoe-Uk, Swan, Gary E., Krasnow, Ruth, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl-Aslan, Anna K., McAdams, Tom A., Eley, Thalia C., Gregory, Alice M., Tynelius, Per, Baker, Laura A., Tuvblad, Catherine, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Lichtenstein, Paul, Spector, Timothy D., Mangino, Massimo, Lachance, Genevieve, Bartels, Meike, van Beijsterveldt, Toos C. E. M., Willemsen, Gonneke, Burt, S. Alexandra, Klump, Kelly L., Harris, Jennifer R., Brandt, Ingunn, Nilsen, Thomas Sevenius, Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Corley, Robin P., Hjelmborg, Jacob v B., Goldberg, Jack H., Iwatani, Yoshinori, Watanabe, Mikio, Honda, Chika, Inui, Fujio, Rasmussen, Finn, Huibregtse, Brooke M., Boomsma, Dorret I., Sørensen, Thorkild I.A., Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Hur, Yoon-Mi, Sund, Reijo, Yokoyama, Yoshie, Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Aaltonen, Sari, Heikkila, Kauko, Oncel, Sevgi Y., Aliev, Fazil, Rebato, Esther, Tarnoki, Adam D., Tarnoki, David L., Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O., Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Cutler, Tessa L., Hopper, John L., Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., Sun, Joohon, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Franz, Carol E., Kremen, William S., Lyons, Michael J., Busjahn, Andreas, Nelson, Tracy L., Whitfield, Keith E., Kandler, Christian, Jang, Kerry L., Gatz, Margaret, Butler, David A., Stazi, Maria A., Fagnani, Corrado, D'Ippolito, Cristina, Duncan, Glen E., Buchwald, Dedra, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Jeong, Hoe-Uk, Swan, Gary E., Krasnow, Ruth, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl-Aslan, Anna K., McAdams, Tom A., Eley, Thalia C., Gregory, Alice M., Tynelius, Per, Baker, Laura A., Tuvblad, Catherine, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Lichtenstein, Paul, Spector, Timothy D., Mangino, Massimo, Lachance, Genevieve, Bartels, Meike, van Beijsterveldt, Toos C. E. M., Willemsen, Gonneke, Burt, S. Alexandra, Klump, Kelly L., Harris, Jennifer R., Brandt, Ingunn, Nilsen, Thomas Sevenius, Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Corley, Robin P., Hjelmborg, Jacob v B., Goldberg, Jack H., Iwatani, Yoshinori, Watanabe, Mikio, Honda, Chika, Inui, Fujio, Rasmussen, Finn, Huibregtse, Brooke M., Boomsma, Dorret I., Sørensen, Thorkild I.A., Kaprio, Jaakko, and Silventoinen, Karri

Abstract

Human height variation is determined by genetic and environmental factors, but it remains unclear whether their influences differ across birth-year cohorts. We conducted an individual-based pooled analysis of 40 twin cohorts including 143,390 complete twin pairs born 1886–1994. Although genetic variance showed a generally increasing trend across the birth-year cohorts, heritability estimates (0.69-0.84 in men and 0.53-0.78 in women) did not present any clear pattern of secular changes. Comparing geographic-cultural regions (Europe, North America and Australia, and East Asia), total height variance was greatest in North America and Australia and lowest in East Asia, but no clear pattern in the heritability estimates across the birth-year cohorts emerged. Our findings do not support the hypothesis that heritability of height is lower in populations with low living standards than in affluent populations, nor that heritability of height will increase within a population as living standards improve.

Published
2016

33. Author response: Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994

Author

Jelenkovic, Aline, primary, Hur, Yoon-Mi, additional, Sund, Reijo, additional, Yokoyama, Yoshie, additional, Siribaddana, Sisira H, additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Pang, Zengchang, additional, Aaltonen, Sari, additional, Heikkilä, Kauko, additional, Öncel, Sevgi Y, additional, Aliev, Fazil, additional, Rebato, Esther, additional, Tarnoki, Adam D, additional, Tarnoki, David L, additional, Christensen, Kaare, additional, Skytthe, Axel, additional, Kyvik, Kirsten O, additional, Silberg, Judy L, additional, Eaves, Lindon J, additional, Maes, Hermine H, additional, Cutler, Tessa L, additional, Hopper, John L, additional, Ordoñana, Juan R, additional, Sánchez-Romera, Juan F, additional, Colodro-Conde, Lucia, additional, Cozen, Wendy, additional, Hwang, Amie E, additional, Mack, Thomas M, additional, Sung, Joohon, additional, Song, Yun-Mi, additional, Yang, Sarah, additional, Lee, Kayoung, additional, Franz, Carol E, additional, Kremen, William S, additional, Lyons, Michael J, additional, Busjahn, Andreas, additional, Nelson, Tracy L, additional, Whitfield, Keith E, additional, Kandler, Christian, additional, Jang, Kerry L, additional, Gatz, Margaret, additional, Butler, David A, additional, Stazi, Maria A, additional, Fagnani, Corrado, additional, D'Ippolito, Cristina, additional, Duncan, Glen E, additional, Buchwald, Dedra, additional, Derom, Catherine A, additional, Vlietinck, Robert F, additional, Loos, Ruth JF, additional, Martin, Nicholas G, additional, Medland, Sarah E, additional, Montgomery, Grant W, additional, Jeong, Hoe-Uk, additional, Swan, Gary E, additional, Krasnow, Ruth, additional, Magnusson, Patrik KE, additional, Pedersen, Nancy L, additional, Dahl-Aslan, Anna K, additional, McAdams, Tom A, additional, Eley, Thalia C, additional, Gregory, Alice M, additional, Tynelius, Per, additional, Baker, Laura A, additional, Tuvblad, Catherine, additional, Bayasgalan, Gombojav, additional, Narandalai, Danshiitsoodol, additional, Lichtenstein, Paul, additional, Spector, Timothy D, additional, Mangino, Massimo, additional, Lachance, Genevieve, additional, Bartels, Meike, additional, van Beijsterveldt, Toos CEM, additional, Willemsen, Gonneke, additional, Burt, S Alexandra, additional, Klump, Kelly L, additional, Harris, Jennifer R, additional, Brandt, Ingunn, additional, Nilsen, Thomas Sevenius, additional, Krueger, Robert F, additional, McGue, Matt, additional, Pahlen, Shandell, additional, Corley, Robin P, additional, Hjelmborg, Jacob v B, additional, Goldberg, Jack H, additional, Iwatani, Yoshinori, additional, Watanabe, Mikio, additional, Honda, Chika, additional, Inui, Fujio, additional, Rasmussen, Finn, additional, Huibregtse, Brooke M, additional, Boomsma, Dorret I, additional, Sørensen, Thorkild I A, additional, Kaprio, Jaakko, additional, and Silventoinen, Karri, additional

Published
2016
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34. Urinary Biomarkers KIM-1 and NGAL for Detection of Chronic Kidney Disease of Uncertain Etiology (CKDu) among Agricultural Communities in Sri Lanka

Author

De Silva, Pallagae Mangala C. S., primary, Mohammed Abdul, Khaja Shameem, additional, Eakanayake, Eakanayake M. D. V., additional, Jayasinghe, Sudheera Sammanthi, additional, Jayasumana, Channa, additional, Asanthi, Hewa Bandulage, additional, Perera, Hettiarachigae S. D., additional, Chaminda, Gamage G. Tushara, additional, Chandana, Ediriweera P. S., additional, and Siribaddana, Sisira H., additional

Published
2016
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36. The CODATwins Project : The Cohort Description of Collaborative Project of Development of Anthropometrical Measures in Twins to Study Macro-Environmental Variation in Genetic and Environmental Effects on Anthropometric Traits

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Honda, Chika, Aaltonen, Sari, Yokoyama, Yoshie, Tarnoki, Adam D, Tarnoki, David L, Ning, Feng, Ji, Fuling, Pang, Zengchang, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Burt, S Alexandra, Klump, Kelly L, Medland, Sarah E, Montgomery, Grant W, Kandler, Christian, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Saudino, Kimberly J, Dubois, Lise, Boivin, Michel, Haworth, Claire M A, Plomin, Robert, Öncel, Sevgi Y, Aliev, Fazil, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M, Saffery, Richard, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L, Maia, José Antonio, Harden, K Paige, Tucker-Drob, Elliot M, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Hong, Changhee, Chong, Youngsook, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth J F, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Cutler, Tessa L, Hopper, John L, Aujard, Kelly, Magnusson, Patrik K E, Pedersen, Nancy L, Dahl Aslan, Anna K, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A, Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkilä, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E, Krasnow, Ruth, Jang, Kerry L, Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E, Buchwald, Dedra, Corley, Robin P, Huibregtse, Brooke M, Nelson, Tracy L, Whitfield, Keith E, Franz, Carol E, Kremen, William S, Lyons, Michael J, Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C E M, Wardle, Jane, Llewellyn, Clare H, Fisher, Abigail, Rebato, Esther, Martin, Nicholas G, Iwatani, Yoshinori, Hayakawa, Kazuo, Rasmussen, Finn, Sung, Joohon, Harris, Jennifer R, Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H, Boomsma, Dorret I, Hur, Yoon-Mi, Sørensen, Thorkild I A, Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Honda, Chika, Aaltonen, Sari, Yokoyama, Yoshie, Tarnoki, Adam D, Tarnoki, David L, Ning, Feng, Ji, Fuling, Pang, Zengchang, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Burt, S Alexandra, Klump, Kelly L, Medland, Sarah E, Montgomery, Grant W, Kandler, Christian, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Saudino, Kimberly J, Dubois, Lise, Boivin, Michel, Haworth, Claire M A, Plomin, Robert, Öncel, Sevgi Y, Aliev, Fazil, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M, Saffery, Richard, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L, Maia, José Antonio, Harden, K Paige, Tucker-Drob, Elliot M, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Hong, Changhee, Chong, Youngsook, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth J F, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Cutler, Tessa L, Hopper, John L, Aujard, Kelly, Magnusson, Patrik K E, Pedersen, Nancy L, Dahl Aslan, Anna K, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A, Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkilä, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E, Krasnow, Ruth, Jang, Kerry L, Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E, Buchwald, Dedra, Corley, Robin P, Huibregtse, Brooke M, Nelson, Tracy L, Whitfield, Keith E, Franz, Carol E, Kremen, William S, Lyons, Michael J, Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C E M, Wardle, Jane, Llewellyn, Clare H, Fisher, Abigail, Rebato, Esther, Martin, Nicholas G, Iwatani, Yoshinori, Hayakawa, Kazuo, Rasmussen, Finn, Sung, Joohon, Harris, Jennifer R, Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H, Boomsma, Dorret I, Hur, Yoon-Mi, Sørensen, Thorkild I A, and Kaprio, Jaakko

Abstract

For over 100 years, the genetics of human anthropometric traits has attracted scientific interest. In particular, height and body mass index (BMI, calculated as kg/m2) have been under intensive genetic research. However, it is still largely unknown whether and how heritability estimates vary between human populations. Opportunities to address this question have increased recently because of the establishment of many new twin cohorts and the increasing accumulation of data in established twin cohorts. We started a new research project to analyze systematically (1) the variation of heritability estimates of height, BMI and their trajectories over the life course between birth cohorts, ethnicities and countries, and (2) to study the effects of birth-related factors, education and smoking on these anthropometric traits and whether these effects vary between twin cohorts. We identified 67 twin projects, including both monozygotic (MZ) and dizygotic (DZ) twins, using various sources. We asked for individual level data on height and weight including repeated measurements, birth related traits, background variables, education and smoking. By the end of 2014, 48 projects participated. Together, we have 893,458 height and weight measures (52% females) from 434,723 twin individuals, including 201,192 complete twin pairs (40% monozygotic, 40% same-sex dizygotic and 20% opposite-sex dizygotic) representing 22 countries. This project demonstrates that large-scale international twin studies are feasible and can promote the use of existing data for novel research purposes.

Published
2015
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37. Zygosity Differences in Height and Body Mass Index of Twins From Infancy to Old Age : A Study of the CODATwins Project

Author

Jelenkovic, Aline, Yokoyama, Yoshie, Sund, Reijo, Honda, Chika, Bogl, Leonie H., Aaltonen, Sari, Ji, Fuling, Ning, Feng, Pang, Zengchang, Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Burt, S. Alexandra, Klump, Kelly L., Medland, Sarah E., Montgomery, Grant W., Kandler, Christian, McAdams, Tom A., Eley, Thalia C., Gregory, Alice M., Saudino, Kimberly J., Dubois, Lise, Boivin, Michel, Tarnoki, Adam D., Tarnoki, David L., Haworth, Claire M. A., Plomin, Robert, Oncel, Sevgi Y., Aliev, Fazil, Stazi, Maria A., Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M., Saffery, Richard, Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A., Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L., Maia, Jose Antonio, Harden, K. Paige, Tucker-Drob, Elliot M., Kim, Bia, Chong, Youngsook, Hong, Changhee, Shin, Hyun Jung, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O., Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Cutler, Tessa L., Hopper, John L., Aujard, Kelly, Magnusson, Patrik K. E., Pedersen, Nancy L., Aslan, Anna K. Dahl, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A., Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkila, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E., Krasnow, Ruth, Jang, Kerry L., Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E., Buchwald, Dedra, Corley, Robin P., Huibregtse, Brooke M., Nelson, Tracy L., Whitfield, Keith E., Franz, Carol E., Kremen, William S., Lyons, Michael J., Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C. E. M., Wardle, Jane, Llewellyn, Clare H., Fisher, Abigail, Rebato, Esther, Martin, Nicholas G., Iwatani, Yoshinori, Hayakawa, Kazuo, Sung, Joohon, Harris, Jennifer R., Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H., Rasmussen, Finn, Hur, Yoon-Mi, Boomsma, Dorret I., Sorensen, Thorkild I. A., Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Yokoyama, Yoshie, Sund, Reijo, Honda, Chika, Bogl, Leonie H., Aaltonen, Sari, Ji, Fuling, Ning, Feng, Pang, Zengchang, Ordonana, Juan R., Sanchez-Romera, Juan F., Colodro-Conde, Lucia, Burt, S. Alexandra, Klump, Kelly L., Medland, Sarah E., Montgomery, Grant W., Kandler, Christian, McAdams, Tom A., Eley, Thalia C., Gregory, Alice M., Saudino, Kimberly J., Dubois, Lise, Boivin, Michel, Tarnoki, Adam D., Tarnoki, David L., Haworth, Claire M. A., Plomin, Robert, Oncel, Sevgi Y., Aliev, Fazil, Stazi, Maria A., Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M., Saffery, Richard, Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A., Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L., Maia, Jose Antonio, Harden, K. Paige, Tucker-Drob, Elliot M., Kim, Bia, Chong, Youngsook, Hong, Changhee, Shin, Hyun Jung, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O., Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Cozen, Wendy, Hwang, Amie E., Mack, Thomas M., He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L., Eaves, Lindon J., Maes, Hermine H., Cutler, Tessa L., Hopper, John L., Aujard, Kelly, Magnusson, Patrik K. E., Pedersen, Nancy L., Aslan, Anna K. Dahl, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A., Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkila, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E., Krasnow, Ruth, Jang, Kerry L., Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E., Buchwald, Dedra, Corley, Robin P., Huibregtse, Brooke M., Nelson, Tracy L., Whitfield, Keith E., Franz, Carol E., Kremen, William S., Lyons, Michael J., Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C. E. M., Wardle, Jane, Llewellyn, Clare H., Fisher, Abigail, Rebato, Esther, Martin, Nicholas G., Iwatani, Yoshinori, Hayakawa, Kazuo, Sung, Joohon, Harris, Jennifer R., Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H., Rasmussen, Finn, Hur, Yoon-Mi, Boomsma, Dorret I., Sorensen, Thorkild I. A., Kaprio, Jaakko, and Silventoinen, Karri

Abstract

A trend toward greater body size in dizygotic (DZ) than in monozygotic (MZ) twins has been suggested by some but not all studies, and this difference may also vary by age. We analyzed zygosity differences in mean values and variances of height and body mass index (BMI) among male and female twins from infancy to old age. Data were derived from an international database of 54 twin cohorts participating in the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins), and included 842,951 height and BMI measurements from twins aged 1 to 102 years. The results showed that DZ twins were consistently taller than MZ twins, with differences of up to 2.0 cm in childhood and adolescence and up to 0.9 cm in adulthood. Similarly, a greater mean BMI of up to 0.3 kg/m(2) in childhood and adolescence and up to 0.2 kg/m(2) in adulthood was observed in DZ twins, although the pattern was less consistent. DZ twins presented up to 1.7% greater height and 1.9% greater BMI than MZ twins; these percentage differences were largest in middle and late childhood and decreased with age in both sexes. The variance of height was similar in MZ and DZ twins at most ages. In contrast, the variance of BMI was significantly higher in DZ than in MZ twins, particularly in childhood. In conclusion, DZ twins were generally taller and had greater BMI than MZ twins, but the differences decreased with age in both sexes.

Published
2015
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38. The CODATwins Project:The Cohort Description of Collaborative Project of Development of Anthropometrical Measures in Twins to Study Macro-Environmental Variation in Genetic and Environmental Effects on Anthropometric Traits

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Honda, Chika, Aaltonen, Sari, Yokoyama, Yoshie, Tarnoki, Adam D, Tarnoki, David L, Ning, Feng, Ji, Fuling, Pang, Zengchang, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Burt, S Alexandra, Klump, Kelly L, Medland, Sarah E, Montgomery, Grant W, Kandler, Christian, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Saudino, Kimberly J, Dubois, Lise, Boivin, Michel, Haworth, Claire M A, Plomin, Robert, Öncel, Sevgi Y, Aliev, Fazil, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M, Saffery, Richard, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L, Maia, José Antonio, Harden, K Paige, Tucker-Drob, Elliot M, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Hong, Changhee, Chong, Youngsook, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth J F, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Cutler, Tessa L, Hopper, John L, Aujard, Kelly, Magnusson, Patrik K E, Pedersen, Nancy L, Aslan, Anna K Dahl, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A, Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkilä, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E, Krasnow, Ruth, Jang, Kerry L, Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E, Buchwald, Dedra, Corley, Robin P, Huibregtse, Brooke M, Nelson, Tracy L, Whitfield, Keith E, Franz, Carol E, Kremen, William S, Lyons, Michael J, Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C E M, Wardle, Jane, Llewellyn, Clare H, Fisher, Abigail, Rebato, Esther, Martin, Nicholas G, Iwatani, Yoshinori, Hayakawa, Kazuo, Rasmussen, Finn, Sung, Joohon, Harris, Jennifer R, Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H, Boomsma, Dorret I, Hur, Yoon-Mi, Sørensen, Thorkild I A, Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Honda, Chika, Aaltonen, Sari, Yokoyama, Yoshie, Tarnoki, Adam D, Tarnoki, David L, Ning, Feng, Ji, Fuling, Pang, Zengchang, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Burt, S Alexandra, Klump, Kelly L, Medland, Sarah E, Montgomery, Grant W, Kandler, Christian, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Saudino, Kimberly J, Dubois, Lise, Boivin, Michel, Haworth, Claire M A, Plomin, Robert, Öncel, Sevgi Y, Aliev, Fazil, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M, Saffery, Richard, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L, Maia, José Antonio, Harden, K Paige, Tucker-Drob, Elliot M, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Hong, Changhee, Chong, Youngsook, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth J F, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Cutler, Tessa L, Hopper, John L, Aujard, Kelly, Magnusson, Patrik K E, Pedersen, Nancy L, Aslan, Anna K Dahl, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A, Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkilä, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E, Krasnow, Ruth, Jang, Kerry L, Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E, Buchwald, Dedra, Corley, Robin P, Huibregtse, Brooke M, Nelson, Tracy L, Whitfield, Keith E, Franz, Carol E, Kremen, William S, Lyons, Michael J, Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C E M, Wardle, Jane, Llewellyn, Clare H, Fisher, Abigail, Rebato, Esther, Martin, Nicholas G, Iwatani, Yoshinori, Hayakawa, Kazuo, Rasmussen, Finn, Sung, Joohon, Harris, Jennifer R, Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H, Boomsma, Dorret I, Hur, Yoon-Mi, Sørensen, Thorkild I A, and Kaprio, Jaakko

Abstract

For over 100 years, the genetics of human anthropometric traits has attracted scientific interest. In particular, height and body mass index (BMI, calculated as kg/m2) have been under intensive genetic research. However, it is still largely unknown whether and how heritability estimates vary between human populations. Opportunities to address this question have increased recently because of the establishment of many new twin cohorts and the increasing accumulation of data in established twin cohorts. We started a new research project to analyze systematically (1) the variation of heritability estimates of height, BMI and their trajectories over the life course between birth cohorts, ethnicities and countries, and (2) to study the effects of birth-related factors, education and smoking on these anthropometric traits and whether these effects vary between twin cohorts. We identified 67 twin projects, including both monozygotic (MZ) and dizygotic (DZ) twins, using various sources. We asked for individual level data on height and weight including repeated measurements, birth related traits, background variables, education and smoking. By the end of 2014, 48 projects participated. Together, we have 893,458 height and weight measures (52% females) from 434,723 twin individuals, including 201,192 complete twin pairs (40% monozygotic, 40% same-sex dizygotic and 20% opposite-sex dizygotic) representing 22 countries. This project demonstrates that large-scale international twin studies are feasible and can promote the use of existing data for novel research purposes., For over 100 years, the genetics of human anthropometric traits has attracted scientific interest. In particular, height and body mass index (BMI, calculated as kg/m2) have been under intensive genetic research. However, it is still largely unknown whether and how heritability estimates vary between human populations. Opportunities to address this question have increased recently because of the establishment of many new twin cohorts and the increasing accumulation of data in established twin cohorts. We started a new research project to analyze systematically (1) the variation of heritability estimates of height, BMI and their trajectories over the life course between birth cohorts, ethnicities and countries, and (2) to study the effects of birth-related factors, education and smoking on these anthropometric traits and whether these effects vary between twin cohorts. We identified 67 twin projects, including both monozygotic (MZ) and dizygotic (DZ) twins, using various sources. We asked for individual level data on height and weight including repeated measurements, birth related traits, background variables, education and smoking. By the end of 2014, 48 projects participated. Together, we have 893,458 height and weight measures (52% females) from 434,723 twin individuals, including 201,192 complete twin pairs (40% monozygotic, 40% same-sex dizygotic and 20% opposite-sex dizygotic) representing 22 countries. This project demonstrates that large-scale international twin studies are feasible and can promote the use of existing data for novel research purposes.

Published
2015

39. Zygosity Differences in Height and Body Mass Index of Twins From Infancy to Old Age:A Study of the CODATwins Project

Author

Jelenkovic, Aline, Yokoyama, Yoshie, Sund, Reijo, Honda, Chika, Bogl, Leonie H, Aaltonen, Sari, Ji, Fuling, Ning, Feng, Pang, Zengchang, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Burt, S Alexandra, Klump, Kelly L, Medland, Sarah E, Montgomery, Grant W, Kandler, Christian, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Saudino, Kimberly J, Dubois, Lise, Boivin, Michel, Tarnoki, Adam D, Tarnoki, David L, Haworth, Claire M A, Plomin, Robert, Öncel, Sevgi Y, Aliev, Fazil, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M, Saffery, Richard, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L, Maia, José Antonio, Harden, K Paige, Tucker-Drob, Elliot M, Kim, Bia, Chong, Youngsook, Hong, Changhee, Shin, Hyun Jung, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth J F, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Cutler, Tessa L, Hopper, John L, Aujard, Kelly, Magnusson, Patrik K E, Pedersen, Nancy L, Aslan, Anna K Dahl, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A, Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkilä, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E, Krasnow, Ruth, Jang, Kerry L, Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E, Buchwald, Dedra, Corley, Robin P, Huibregtse, Brooke M, Nelson, Tracy L, Whitfield, Keith E, Franz, Carol E, Kremen, William S, Lyons, Michael J, Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C E M, Wardle, Jane, Llewellyn, Clare H, Fisher, Abigail, Rebato, Esther, Martin, Nicholas G, Iwatani, Yoshinori, Hayakawa, Kazuo, Sung, Joohon, Harris, Jennifer R, Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H, Rasmussen, Finn, Hur, Yoon-Mi, Boomsma, Dorret I, Sørensen, Thorkild I A, Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Yokoyama, Yoshie, Sund, Reijo, Honda, Chika, Bogl, Leonie H, Aaltonen, Sari, Ji, Fuling, Ning, Feng, Pang, Zengchang, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Burt, S Alexandra, Klump, Kelly L, Medland, Sarah E, Montgomery, Grant W, Kandler, Christian, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Saudino, Kimberly J, Dubois, Lise, Boivin, Michel, Tarnoki, Adam D, Tarnoki, David L, Haworth, Claire M A, Plomin, Robert, Öncel, Sevgi Y, Aliev, Fazil, Stazi, Maria A, Fagnani, Corrado, D'Ippolito, Cristina, Craig, Jeffrey M, Saffery, Richard, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Gatz, Margaret, Butler, David A, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Freitas, Duarte L, Maia, José Antonio, Harden, K Paige, Tucker-Drob, Elliot M, Kim, Bia, Chong, Youngsook, Hong, Changhee, Shin, Hyun Jung, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth J F, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, He, Mingguang, Ding, Xiaohu, Chang, Billy, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Cutler, Tessa L, Hopper, John L, Aujard, Kelly, Magnusson, Patrik K E, Pedersen, Nancy L, Aslan, Anna K Dahl, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Baker, Laura A, Tuvblad, Catherine, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Heikkilä, Kauko, Tan, Qihua, Zhang, Dongfeng, Swan, Gary E, Krasnow, Ruth, Jang, Kerry L, Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Lichtenstein, Paul, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Tynelius, Per, Duncan, Glen E, Buchwald, Dedra, Corley, Robin P, Huibregtse, Brooke M, Nelson, Tracy L, Whitfield, Keith E, Franz, Carol E, Kremen, William S, Lyons, Michael J, Ooki, Syuichi, Brandt, Ingunn, Nilsen, Thomas Sevenius, Inui, Fujio, Watanabe, Mikio, Bartels, Meike, van Beijsterveldt, Toos C E M, Wardle, Jane, Llewellyn, Clare H, Fisher, Abigail, Rebato, Esther, Martin, Nicholas G, Iwatani, Yoshinori, Hayakawa, Kazuo, Sung, Joohon, Harris, Jennifer R, Willemsen, Gonneke, Busjahn, Andreas, Goldberg, Jack H, Rasmussen, Finn, Hur, Yoon-Mi, Boomsma, Dorret I, Sørensen, Thorkild I A, Kaprio, Jaakko, and Silventoinen, Karri

Abstract

A trend toward greater body size in dizygotic (DZ) than in monozygotic (MZ) twins has been suggested by some but not all studies, and this difference may also vary by age. We analyzed zygosity differences in mean values and variances of height and body mass index (BMI) among male and female twins from infancy to old age. Data were derived from an international database of 54 twin cohorts participating in the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins), and included 842,951 height and BMI measurements from twins aged 1 to 102 years. The results showed that DZ twins were consistently taller than MZ twins, with differences of up to 2.0 cm in childhood and adolescence and up to 0.9 cm in adulthood. Similarly, a greater mean BMI of up to 0.3 kg/m2 in childhood and adolescence and up to 0.2 kg/m2 in adulthood was observed in DZ twins, although the pattern was less consistent. DZ twins presented up to 1.7% greater height and 1.9% greater BMI than MZ twins; these percentage differences were largest in middle and late childhood and decreased with age in both sexes. The variance of height was similar in MZ and DZ twins at most ages. In contrast, the variance of BMI was significantly higher in DZ than in MZ twins, particularly in childhood. In conclusion, DZ twins were generally taller and had greater BMI than MZ twins, but the differences decreased with age in both sexes.

Published
2015

40. Zygosity Differences in Height and Body Mass Index of Twins From Infancy to Old Age: A Study of the CODATwins Project

Author

Jelenkovic, Aline, primary, Yokoyama, Yoshie, additional, Sund, Reijo, additional, Honda, Chika, additional, Bogl, Leonie H, additional, Aaltonen, Sari, additional, Ji, Fuling, additional, Ning, Feng, additional, Pang, Zengchang, additional, Ordoñana, Juan R., additional, Sánchez-Romera, Juan F., additional, Colodro-Conde, Lucia, additional, Burt, S. Alexandra, additional, Klump, Kelly L., additional, Medland, Sarah E., additional, Montgomery, Grant W., additional, Kandler, Christian, additional, McAdams, Tom A., additional, Eley, Thalia C., additional, Gregory, Alice M., additional, Saudino, Kimberly J., additional, Dubois, Lise, additional, Boivin, Michel, additional, Tarnoki, Adam D., additional, Tarnoki, David L., additional, Haworth, Claire M. A., additional, Plomin, Robert, additional, Öncel, Sevgi Y., additional, Aliev, Fazil, additional, Stazi, Maria A., additional, Fagnani, Corrado, additional, D’Ippolito, Cristina, additional, Craig, Jeffrey M., additional, Saffery, Richard, additional, Siribaddana, Sisira H., additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Spector, Timothy, additional, Mangino, Massimo, additional, Lachance, Genevieve, additional, Gatz, Margaret, additional, Butler, David A., additional, Bayasgalan, Gombojav, additional, Narandalai, Danshiitsoodol, additional, Freitas, Duarte L, additional, Maia, José Antonio, additional, Harden, K. Paige, additional, Tucker-Drob, Elliot M., additional, Kim, Bia, additional, Chong, Youngsook, additional, Hong, Changhee, additional, Shin, Hyun Jung, additional, Christensen, Kaare, additional, Skytthe, Axel, additional, Kyvik, Kirsten O., additional, Derom, Catherine A., additional, Vlietinck, Robert F., additional, Loos, Ruth J. F., additional, Cozen, Wendy, additional, Hwang, Amie E., additional, Mack, Thomas M., additional, He, Mingguang, additional, Ding, Xiaohu, additional, Chang, Billy, additional, Silberg, Judy L., additional, Eaves, Lindon J., additional, Maes, Hermine H., additional, Cutler, Tessa L., additional, Hopper, John L., additional, Aujard, Kelly, additional, Magnusson, Patrik K. E., additional, Pedersen, Nancy L., additional, Aslan, Anna K. Dahl, additional, Song, Yun-Mi, additional, Yang, Sarah, additional, Lee, Kayoung, additional, Baker, Laura A., additional, Tuvblad, Catherine, additional, Bjerregaard-Andersen, Morten, additional, Beck-Nielsen, Henning, additional, Sodemann, Morten, additional, Heikkilä, Kauko, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Swan, Gary E., additional, Krasnow, Ruth, additional, Jang, Kerry L., additional, Knafo-Noam, Ariel, additional, Mankuta, David, additional, Abramson, Lior, additional, Lichtenstein, Paul, additional, Krueger, Robert F., additional, McGue, Matt, additional, Pahlen, Shandell, additional, Tynelius, Per, additional, Duncan, Glen E., additional, Buchwald, Dedra, additional, Corley, Robin P., additional, Huibregtse, Brooke M., additional, Nelson, Tracy L., additional, Whitfield, Keith E., additional, Franz, Carol E., additional, Kremen, William S., additional, Lyons, Michael J., additional, Ooki, Syuichi, additional, Brandt, Ingunn, additional, Nilsen, Thomas Sevenius, additional, Inui, Fujio, additional, Watanabe, Mikio, additional, Bartels, Meike, additional, van Beijsterveldt, Toos C. E. M., additional, Wardle, Jane, additional, Llewellyn, Clare H., additional, Fisher, Abigail, additional, Rebato, Esther, additional, Martin, Nicholas G., additional, Iwatani, Yoshinori, additional, Hayakawa, Kazuo, additional, Sung, Joohon, additional, Harris, Jennifer R., additional, Willemsen, Gonneke, additional, Busjahn, Andreas, additional, Goldberg, Jack H., additional, Rasmussen, Finn, additional, Hur, Yoon-Mi, additional, Boomsma, Dorret I., additional, Sørensen, Thorkild I. A., additional, Kaprio, Jaakko, additional, and Silventoinen, Karri, additional

Published
2015
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41. The CODATwins Project: The Cohort Description of Collaborative Project of Development of Anthropometrical Measures in Twins to Study Macro-Environmental Variation in Genetic and Environmental Effects on Anthropometric Traits

Author

Silventoinen, Karri, primary, Jelenkovic, Aline, additional, Sund, Reijo, additional, Honda, Chika, additional, Aaltonen, Sari, additional, Yokoyama, Yoshie, additional, Tarnoki, Adam D., additional, Tarnoki, David L., additional, Ning, Feng, additional, Ji, Fuling, additional, Pang, Zengchang, additional, Ordoñana, Juan R., additional, Sánchez-Romera, Juan F., additional, Colodro-Conde, Lucia, additional, Burt, S. Alexandra, additional, Klump, Kelly L., additional, Medland, Sarah E., additional, Montgomery, Grant W., additional, Kandler, Christian, additional, McAdams, Tom A., additional, Eley, Thalia C., additional, Gregory, Alice M., additional, Saudino, Kimberly J., additional, Dubois, Lise, additional, Boivin, Michel, additional, Haworth, Claire M. A., additional, Plomin, Robert, additional, Öncel, Sevgi Y., additional, Aliev, Fazil, additional, Stazi, Maria A., additional, Fagnani, Corrado, additional, D’Ippolito, Cristina, additional, Craig, Jeffrey M., additional, Saffery, Richard, additional, Siribaddana, Sisira H., additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Spector, Timothy, additional, Mangino, Massimo, additional, Lachance, Genevieve, additional, Gatz, Margaret, additional, Butler, David A., additional, Bayasgalan, Gombojav, additional, Narandalai, Danshiitsoodol, additional, Freitas, Duarte L., additional, Maia, José Antonio, additional, Harden, K. Paige, additional, Tucker-Drob, Elliot M., additional, Christensen, Kaare, additional, Skytthe, Axel, additional, Kyvik, Kirsten O., additional, Hong, Changhee, additional, Chong, Youngsook, additional, Derom, Catherine A., additional, Vlietinck, Robert F., additional, Loos, Ruth J. F., additional, Cozen, Wendy, additional, Hwang, Amie E., additional, Mack, Thomas M., additional, He, Mingguang, additional, Ding, Xiaohu, additional, Chang, Billy, additional, Silberg, Judy L., additional, Eaves, Lindon J., additional, Maes, Hermine H., additional, Cutler, Tessa L., additional, Hopper, John L., additional, Aujard, Kelly, additional, Magnusson, Patrik K. E., additional, Pedersen, Nancy L., additional, Aslan, Anna K. Dahl, additional, Song, Yun-Mi, additional, Yang, Sarah, additional, Lee, Kayoung, additional, Baker, Laura A., additional, Tuvblad, Catherine, additional, Bjerregaard-Andersen, Morten, additional, Beck-Nielsen, Henning, additional, Sodemann, Morten, additional, Heikkilä, Kauko, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Swan, Gary E., additional, Krasnow, Ruth, additional, Jang, Kerry L., additional, Knafo-Noam, Ariel, additional, Mankuta, David, additional, Abramson, Lior, additional, Lichtenstein, Paul, additional, Krueger, Robert F., additional, McGue, Matt, additional, Pahlen, Shandell, additional, Tynelius, Per, additional, Duncan, Glen E., additional, Buchwald, Dedra, additional, Corley, Robin P., additional, Huibregtse, Brooke M., additional, Nelson, Tracy L., additional, Whitfield, Keith E., additional, Franz, Carol E., additional, Kremen, William S., additional, Lyons, Michael J., additional, Ooki, Syuichi, additional, Brandt, Ingunn, additional, Nilsen, Thomas Sevenius, additional, Inui, Fujio, additional, Watanabe, Mikio, additional, Bartels, Meike, additional, van Beijsterveldt, Toos C. E. M., additional, Wardle, Jane, additional, Llewellyn, Clare H., additional, Fisher, Abigail, additional, Rebato, Esther, additional, Martin, Nicholas G., additional, Iwatani, Yoshinori, additional, Hayakawa, Kazuo, additional, Rasmussen, Finn, additional, Sung, Joohon, additional, Harris, Jennifer R., additional, Willemsen, Gonneke, additional, Busjahn, Andreas, additional, Goldberg, Jack H., additional, Boomsma, Dorret I., additional, Hur, Yoon-Mi, additional, Sørensen, Thorkild I. A., additional, and Kaprio, Jaakko, additional

Published
2015
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45. Hemoglobin variants in patients with type 2 diabetes mellitus.

Author

Chandrasena LG, Peiris H, Williams S, and Siribaddana SH

Subjects
Blood Glucose analysis, Chromatography, High Pressure Liquid, Cross-Sectional Studies, Female, Humans, Male, Prospective Studies, Sri Lanka, Diabetes Mellitus, Type 2 blood, Hemoglobins analysis
Abstract

Measurement of HbA1c levels in diabetic patients is an established procedure for evaluating long-term control of diabetes. Despite its usefulness, conditions that effect hemoglobin concentration, such as hemoglobinopathies give rise to inappropriate HbA1c values. Since information about hemoglobinopathies in the diabetic population in Sri Lanka is limited, a prospective cross-sectional study was carried out among 2,695 diabetic subjects attending the diabetic clinic at Nawaloka Hospital, Sri Lanka. Hemoglobin type and HbA1c were measured by the HPLC method. The results reveal among 2,695 diabetic subjects, 53 (2%) had abnormal hemoglobin types (HbF and HbS). HbA1c concentrations in diabetic patients without Hb abnormalities show a higher correlation with fasting blood glucose than those with hemoglobin abnormalities. This study emphasizes that patients with inappropriate HbA1c values should be investigated for hemoglobinopathies.

Published
2010

46. Challenges in recruiting older twins for the Sri Lankan twin registry.

Author

Sumathipala A, Siribaddana SH, Abeysingha NM, De Silva N, Fernando DJ, Dayaratne DA, De Silva D, Warnasuriya ND, and Hotopf M

Subjects
Birth Certificates, Humans, Sri Lanka, Surveys and Questionnaires, Registries, Twins
Abstract

The National Twin Registry of Sri Lanka was established in 1997 as a volunteer register. To extend it to a population-based register, we examined the effectiveness of tracing older twins by inspecting birth records and recruiting them by postal invitation and in-person contact. Birth records at a divisional secretariat reported from 2 maternity hospitals between the years of 1954-1970 were scrutinised to identify a random sample of twins. These hospitals had the highest twin delivery rates for the whole country. We identified 620 twins and a questionnaire was mailed to them. Research assistants visited a cohort of non-respondents (71) in the postal survey. These 620 twins were identified after perusing 20700 birth records. The twinning rate was estimated at 29.95 ([620/20700] x 1000) twins per 1000 registered births (CI 27.63-32.27). In the postal survey, 37 (12%) responded and 62 letters were returned (20%). Both twins were still alive in 20 pairs, one was still alive in 15 pairs, and both twins were dead in 2 pairs. During field visits, 42 (59.2%) addresses were located. Information was available on 16 twin pairs. Both twins were alive in 8 pairs, one each in 4 pairs, and both were dead in 4 pairs and at least one twin was traced in 10 pairs (14%). Both the postal and the field survey gave a low yield. This finding is different from tracing younger twins born between 1985-1997 by using the same methods. Migration, urbanization and development in the country might have affected tracing older twins from the birth record addresses, which were decades old.

Published
2003
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