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1. Age of onset of obsessive-compulsive disorder differentially affects white matter microstructure

Author

Vriend, Chris, de Joode, Niels T., Pouwels, Petra J. W., Liu, Feng, Otaduy, Maria C. G., Pastorello, Bruno, Robertson, Frances C., Ipser, Jonathan, Lee, Seonjoo, Hezel, Dianne M., van Meter, Page E., Batistuzzo, Marcelo C., Hoexter, Marcelo Q., Sheshachala, Karthik, Narayanaswamy, Janardhanan C., Venkatasubramanian, Ganesan, Lochner, Christine, Miguel, Euripedes C., Reddy, Y. C. Janardhan, Shavitt, Roseli G., Stein, Dan J., Wall, Melanie, Simpson, Helen Blair, and van den Heuvel, Odile A.

Published
2024
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5. Cross-disorder genome-wide analyses suggest a complex genetic relationship between Tourette's syndrome and OCD.

Author

Yu, Dongmei, Mathews, Carol A, Scharf, Jeremiah M, Neale, Benjamin M, Davis, Lea K, Gamazon, Eric R, Derks, Eske M, Evans, Patrick, Edlund, Christopher K, Crane, Jacquelyn, Fagerness, Jesen A, Osiecki, Lisa, Gallagher, Patience, Gerber, Gloria, Haddad, Stephen, Illmann, Cornelia, McGrath, Lauren M, Mayerfeld, Catherine, Arepalli, Sampath, Barlassina, Cristina, Barr, Cathy L, Bellodi, Laura, Benarroch, Fortu, Berrió, Gabriel Bedoya, Bienvenu, O Joseph, Black, Donald W, Bloch, Michael H, Brentani, Helena, Bruun, Ruth D, Budman, Cathy L, Camarena, Beatriz, Campbell, Desmond D, Cappi, Carolina, Silgado, Julio C Cardona, Cavallini, Maria C, Chavira, Denise A, Chouinard, Sylvain, Cook, Edwin H, Cookson, MR, Coric, Vladimir, Cullen, Bernadette, Cusi, Daniele, Delorme, Richard, Denys, Damiaan, Dion, Yves, Eapen, Valsama, Egberts, Karin, Falkai, Peter, Fernandez, Thomas, Fournier, Eduardo, Garrido, Helena, Geller, Daniel, Gilbert, Donald L, Girard, Simon L, Grabe, Hans J, Grados, Marco A, Greenberg, Benjamin D, Gross-Tsur, Varda, Grünblatt, Edna, Hardy, John, Heiman, Gary A, Hemmings, Sian MJ, Herrera, Luis D, Hezel, Dianne M, Hoekstra, Pieter J, Jankovic, Joseph, Kennedy, James L, King, Robert A, Konkashbaev, Anuar I, Kremeyer, Barbara, Kurlan, Roger, Lanzagorta, Nuria, Leboyer, Marion, Leckman, James F, Lennertz, Leonhard, Liu, Chunyu, Lochner, Christine, Lowe, Thomas L, Lupoli, Sara, Macciardi, Fabio, Maier, Wolfgang, Manunta, Paolo, Marconi, Maurizio, McCracken, James T, Mesa Restrepo, Sandra C, Moessner, Rainald, Moorjani, Priya, Morgan, Jubel, Muller, Heike, Murphy, Dennis L, Naarden, Allan L, Nurmi, Erika, Ochoa, William Cornejo, Ophoff, Roel A, Pakstis, Andrew J, Pato, Michele T, Pato, Carlos N, Piacentini, John, Pittenger, Christopher, and Pollak, Yehuda

Subjects
Humans, Tourette Syndrome, Severity of Illness Index, Obsessive-Compulsive Disorder, Psychiatric Status Rating Scales, Comorbidity, Polymorphism, Single Nucleotide, Adult, Female, Male, Genome-Wide Association Study, Human Genome, Genetics, Brain Disorders, Serious Mental Illness, Neurodegenerative, Prevention, Anxiety Disorders, Mental Health, Neurosciences, 2.1 Biological and endogenous factors, Aetiology, Mental health, Medical and Health Sciences, Psychology and Cognitive Sciences, Psychiatry
Abstract

ObjectiveObsessive-compulsive disorder (OCD) and Tourette's syndrome are highly heritable neurodevelopmental disorders that are thought to share genetic risk factors. However, the identification of definitive susceptibility genes for these etiologically complex disorders remains elusive. The authors report a combined genome-wide association study (GWAS) of Tourette's syndrome and OCD.MethodThe authors conducted a GWAS in 2,723 cases (1,310 with OCD, 834 with Tourette's syndrome, 579 with OCD plus Tourette's syndrome/chronic tics), 5,667 ancestry-matched controls, and 290 OCD parent-child trios. GWAS summary statistics were examined for enrichment of functional variants associated with gene expression levels in brain regions. Polygenic score analyses were conducted to investigate the genetic architecture within and across the two disorders.ResultsAlthough no individual single-nucleotide polymorphisms (SNPs) achieved genome-wide significance, the GWAS signals were enriched for SNPs strongly associated with variations in brain gene expression levels (expression quantitative loci, or eQTLs), suggesting the presence of true functional variants that contribute to risk of these disorders. Polygenic score analyses identified a significant polygenic component for OCD (p=2×10(-4)), predicting 3.2% of the phenotypic variance in an independent data set. In contrast, Tourette's syndrome had a smaller, nonsignificant polygenic component, predicting only 0.6% of the phenotypic variance (p=0.06). No significant polygenic signal was detected across the two disorders, although the sample is likely underpowered to detect a modest shared signal. Furthermore, the OCD polygenic signal was significantly attenuated when cases with both OCD and co-occurring Tourette's syndrome/chronic tics were included in the analysis (p=0.01).ConclusionsPrevious work has shown that Tourette's syndrome and OCD have some degree of shared genetic variation. However, the data from this study suggest that there are also distinct components to the genetic architectures of these two disorders. Furthermore, OCD with co-occurring Tourette's syndrome/chronic tics may have different underlying genetic susceptibility compared with OCD alone.

Published
2015

9. Toward identifying reproducible brain signatures of obsessive-compulsive profiles: rationale and methods for a new global initiative

Author

Simpson, Helen Blair, van den Heuvel, Odile A., Miguel, Euripedes C., Reddy, Y. C. Janardhan, Stein, Dan J., Lewis-Fernández, Roberto, Shavitt, Roseli Gedanke, Lochner, Christine, Pouwels, Petra J. W., Narayanawamy, Janardhanan C., Venkatasubramanian, Ganesan, Hezel, Dianne M., Vriend, Chris, Batistuzzo, Marcelo C., Hoexter, Marcelo Q., de Joode, Niels T., Costa, Daniel Lucas, de Mathis, Maria Alice, Sheshachala, Karthik, Narayan, Madhuri, van Balkom, Anton J. L. M., Batelaan, Neeltje M., Venkataram, Shivakumar, Cherian, Anish, Marincowitz, Clara, Pannekoek, Nienke, Stovezky, Yael R., Mare, Karen, Liu, Feng, Otaduy, Maria Concepcion Garcia, Pastorello, Bruno, Rao, Rashmi, Katechis, Martha, Van Meter, Page, and Wall, Melanie

Published
2020
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12. Cross-national harmonization of neurocognitive assessment across five sites in a global study.

Author

Batistuzzo, Marcelo C., primary, Sheshachala, Karthik, additional, Alschuler, Daniel M., additional, Hezel, Dianne M., additional, Lewis-Fernández, Roberto, additional, de Joode, Niels T., additional, Vriend, Chris, additional, Lempert, Karolina M., additional, Narayan, Madhuri, additional, Marincowitz, Clara, additional, Lochner, Christine, additional, Stein, Dan J., additional, Narayanaswamy, Janardhanan C., additional, van den Heuvel, Odile A., additional, Simpson, Helen Blair, additional, and Wall, Melanie, additional

Published
2023
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13. Measurement fidelity of clinical assessment methods in a global study on identifying reproducible brain signatures of obsessive–compulsive disorder.

Author

Shavitt, Roseli G., primary, Sheshachala, Karthik, additional, Hezel, Dianne M., additional, Wall, Melanie M., additional, Balachander, Srinivas, additional, Lochner, Christine, additional, Narayanaswamy, Janardhanan C., additional, Costa, Daniel L. C., additional, de Mathis, Maria Alice, additional, van Balkom, Anton J. L. M., additional, de Joode, Niels T., additional, Narayan, Madhuri, additional, van den Heuvel, Odile A., additional, Stein, Dan J., additional, Miguel, Euripedes C., additional, Simpson, Helen Blair, additional, and Reddy, Y. C. Janardhan, additional

Published
2022
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27. Exposure and response prevention for obsessive-compulsive disorder: A review and new directions.

Author

Hezel, Dianne M. and Simpson, H. Blair

Subjects
*OBSESSIVE-compulsive disorder, *COGNITIVE therapy, *PSYCHOLOGICAL stress, *THOUGHT & thinking, *TREATMENT effectiveness, *THERAPEUTICS
Abstract

Obsessive-compulsive disorder (OCD) is characterized by distressing thoughts and repetitive behaviors that are interfering, time-consuming, and difficult to control. Although OCD was once thought to be untreatable, the last few decades have seen great success in reducing symptoms with exposure and response prevention (ERP), which is now considered to be the first-line psychotherapy for the disorder. Despite these significant therapeutic advances, there remain a number of challenges in treating OCD. In this review, we will describe the theoretical underpinnings and elements of ERP, examine the evidence for its effectiveness, and discuss new directions for enhancing it as a therapy for OCD. [ABSTRACT FROM AUTHOR]

Published
2019
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28. Cross-Disorder Genome-Wide Analyses Suggest a Complex Genetic Relationship Between Tourette Syndrome and Obsessive-Compulsive Disorder

Author

Yu, Dongmei, Mathews, Carol A., Scharf, Jeremiah M., Neale, Benjamin M., Davis, Lea K., Gamazon, Eric R., Derks, Eske M., Evans, Patrick, Edlund, Christopher K., Crane, Jacquelyn, Fagerness, Jesen A., Osiecki, Lisa, Gallagher, Patience, Gerber, Gloria, Haddad, Stephen, Illmann, Cornelia, McGrath, Lauren M., Mayerfeld, Catherine, Arepalli, Sampath, Barlassina, Cristina, Barr, Cathy L., Bellodi, Laura, Benarroch, Fortu, Berrió, Gabriel Bedoya, Bienvenu, O. Joseph, Black, Donald, Bloch, Michael H., Brentani, Helena, Bruun, Ruth D., Budman, Cathy L., Camarena, Beatriz, Campbell, Desmond D., Cappi, Carolina, Cardona Silgado, Julio C., Cavallini, Maria C., Chavira, Denise A., Chouinard, Sylvain, Cook, Edwin H., Cookson, M. R., Coric, Vladimir, Cullen, Bernadette, Cusi, Daniele, Delorme, Richard, Denys, Damiaan, Dion, Yves, Eapen, Valsama, Egberts, Karin, Falkai, Peter, Fernandez, Thomas, Fournier, Eduardo, Garrido, Helena, Geller, Daniel, Gilbert, Donald, Girard, Simon L., Grabe, Hans J., Grados, Marco A., Greenberg, Benjamin D., Gross-Tsur, Varda, Grünblatt, Edna, Hardy, John, Heiman, Gary A., Hemmings, Sian M.J., Herrera, Luis D., Hezel, Dianne M., Hoekstra, Pieter J., Jankovic, Joseph, Kennedy, James L., King, Robert A., Konkashbaev, Anuar I., Kremeyer, Barbara, Kurlan, Roger, Lanzagorta, Nuria, Leboyer, Marion, Leckman, James F., Lennertz, Leonhard, Liu, Chunyu, Lochner, Christine, Lowe, Thomas L., Lupoli, Sara, Macciardi, Fabio, Maier, Wolfgang, Manunta, Paolo, Marconi, Maurizio, McCracken, James T., Mesa Restrepo, Sandra C., Moessner, Rainald, Moorjani, Priya, Morgan, Jubel, Muller, Heike, Murphy, Dennis L., Naarden, Allan L., Ochoa, William Cornejo, Ophoff, Roel A., Pakstis, Andrew J., Pato, Michele T., Pato, Carlos N., Piacentini, John, Pittenger, Christopher, Pollak, Yehuda, Rauch, Scott L., Renner, Tobias, Reus, Victor I., Richter, Margaret A., Riddle, Mark A., Robertson, Mary M., Romero, Roxana, Rosário, Maria C., Rosenberg, David, Ruhrmann, Stephan, Sabatti, Chiara, Salvi, Erika, Sampaio, Aline S., Samuels, Jack, Sandor, Paul, Service, Susan K., Sheppard, Brooke, Singer, Harvey S., Smit, Jan H., Stein, Dan J., Strengman, Eric, Tischfield, Jay A., Turiel, Maurizio, Valencia Duarte, Ana V., Vallada, Homero, Veenstra-VanderWeele, Jeremy, Walitza, Susanne, Walkup, John, Wang, Ying, Weale, Mike, Weiss, Robert, Wendland, Jens R., Westenberg, Herman G.M., Yao, Yin, Hounie, Ana G., Miguel, Euripedes C., Nicolini, Humberto, Wagner, Michael, Ruiz-Linares, Andres, Cath, Danielle C., McMahon, William, Posthuma, Danielle, Oostra, Ben A., Nestadt, Gerald, Rouleau, Guy A., Purcell, Shaun, Jenike, Michael A., Heutink, Peter, Hanna, Gregory L., Conti, David V., Arnold, Paul D., Freimer, Nelson, Stewart, S. Evelyn, Knowles, James A., Cox, Nancy J., and Pauls, David L.

Subjects
Adult, Male, Psychiatric Status Rating Scales, Obsessive-Compulsive Disorder, Comorbidity, behavioral disciplines and activities, Polymorphism, Single Nucleotide, Severity of Illness Index, Article, mental disorders, Humans, Female, Genome-Wide Association Study, Tourette Syndrome
Abstract

Obsessive-compulsive disorder (OCD) and Tourette's syndrome are highly heritable neurodevelopmental disorders that are thought to share genetic risk factors. However, the identification of definitive susceptibility genes for these etiologically complex disorders remains elusive. The authors report a combined genome-wide association study (GWAS) of Tourette's syndrome and OCD.The authors conducted a GWAS in 2,723 cases (1,310 with OCD, 834 with Tourette's syndrome, 579 with OCD plus Tourette's syndrome/chronic tics), 5,667 ancestry-matched controls, and 290 OCD parent-child trios. GWAS summary statistics were examined for enrichment of functional variants associated with gene expression levels in brain regions. Polygenic score analyses were conducted to investigate the genetic architecture within and across the two disorders.Although no individual single-nucleotide polymorphisms (SNPs) achieved genome-wide significance, the GWAS signals were enriched for SNPs strongly associated with variations in brain gene expression levels (expression quantitative loci, or eQTLs), suggesting the presence of true functional variants that contribute to risk of these disorders. Polygenic score analyses identified a significant polygenic component for OCD (p=2×10(-4)), predicting 3.2% of the phenotypic variance in an independent data set. In contrast, Tourette's syndrome had a smaller, nonsignificant polygenic component, predicting only 0.6% of the phenotypic variance (p=0.06). No significant polygenic signal was detected across the two disorders, although the sample is likely underpowered to detect a modest shared signal. Furthermore, the OCD polygenic signal was significantly attenuated when cases with both OCD and co-occurring Tourette's syndrome/chronic tics were included in the analysis (p=0.01).Previous work has shown that Tourette's syndrome and OCD have some degree of shared genetic variation. However, the data from this study suggest that there are also distinct components to the genetic architectures of these two disorders. Furthermore, OCD with co-occurring Tourette's syndrome/chronic tics may have different underlying genetic susceptibility compared with OCD alone.

Published
2014

29. Cross-Disorder Genome-Wide Analyses Suggest a Complex Genetic Relationship Between Tourette's Syndrome and OCD

Author

Sub String Theory Cosmology and ElemPart, Leerstoel Hout, Experimental psychopathology, Yu, Dongmei, Mathews, Carol A, Scharf, Jeremiah M, Neale, Benjamin M, Davis, Lea K, Gamazon, Eric R, Derks, Eske M, Evans, Patrick, Edlund, Christopher K, Crane, Jacquelyn, Fagerness, Jesen A, Osiecki, Lisa, Gallagher, Patience, Gerber, Gloria, Haddad, Stephen, Illmann, Cornelia, McGrath, Lauren M, Mayerfeld, Catherine, Arepalli, Sampath, Barlassina, Cristina, Barr, Cathy L, Bellodi, Laura, Benarroch, Fortu, Berrió, Gabriel Bedoya, Bienvenu, O Joseph, Black, Donald W, Bloch, Michael H, Brentani, Helena, Bruun, Ruth D, Budman, Cathy L, Camarena, Beatriz, Campbell, Desmond D, Cappi, Carolina, Silgado, Julio C Cardona, Cavallini, Maria C, Chavira, Denise A, Chouinard, Sylvain, Cook, Edwin H, Cookson, M R, Coric, Vladimir, Cullen, Bernadette, Cusi, Daniele, Delorme, Richard, Denys, Damiaan, Dion, Yves, Eapen, Valsama, Egberts, Karin, Falkai, Peter, Fernandez, Thomas, Fournier, Eduardo, Garrido, Helena, Geller, Daniel, Gilbert, Donald L, Girard, Simon L, Grabe, Hans J, Grados, Marco A, Greenberg, Benjamin D, Gross-Tsur, Varda, Grünblatt, Edna, Hardy, John, Heiman, Gary A, Hemmings, Sian M J, Herrera, Luis D, Hezel, Dianne M, Hoekstra, Pieter J, Jankovic, Joseph, Kennedy, James L, King, Robert A, Konkashbaev, Anuar I, Kremeyer, Barbara, Kurlan, Roger, Lanzagorta, Nuria, Leboyer, Marion, Leckman, James F, Lennertz, Leonhard, Liu, Chunyu, Lochner, Christine, Lowe, Thomas L, Lupoli, Sara, Macciardi, Fabio, Maier, Wolfgang, Manunta, Paolo, Marconi, Maurizio, McCracken, James T, Mesa Restrepo, Sandra C, Moessner, Rainald, Moorjani, Priya, Morgan, Jubel, Muller, Heike, Murphy, Dennis L, Naarden, Allan L, Nurmi, Erika, Ochoa, William Cornejo, Ophoff, Roel A, Pakstis, Andrew J, Pato, Michele T, Pato, Carlos N, Piacentini, John, Pittenger, Christopher, Pollak, Yehuda, Rauch, Scott L, Renner, Tobias, Reus, Victor I, Richter, Margaret A, Riddle, Mark A, Robertson, Mary M, Romero, Roxana, Rosário, Maria C, Rosenberg, David, Ruhrmann, Stephan, Sabatti, Chiara, Salvi, Erika, Sampaio, Aline S, Samuels, Jack, Sandor, Paul, Service, Susan K, Sheppard, Brooke, Singer, Harvey S, Smit, Jan H, Stein, Dan J, Strengman, Eric, Tischfield, Jay A, Turiel, Maurizio, Valencia Duarte, Ana V, Vallada, Homero, Veenstra-VanderWeele, Jeremy, Walitza, Susanne, Wang, Ying, Weale, Mike, Weiss, Robert, Wendland, Jens R, Westenberg, Herman G M, Shugart, Yin Yao, Hounie, Ana G, Miguel, Euripedes C, Nicolini, Humberto, Wagner, Michael, Ruiz-Linares, Andres, Cath, Danielle C, McMahon, William, Posthuma, Danielle, Oostra, Ben A, Nestadt, Gerald, Rouleau, Guy A, Purcell, Shaun, Jenike, Michael A, Heutink, Peter, Hanna, Gregory L, Conti, David V, Arnold, Paul D, Freimer, Nelson B, Stewart, S Evelyn, Knowles, James A, Cox, Nancy J, Pauls, David L, Sub String Theory Cosmology and ElemPart, Leerstoel Hout, Experimental psychopathology, Yu, Dongmei, Mathews, Carol A, Scharf, Jeremiah M, Neale, Benjamin M, Davis, Lea K, Gamazon, Eric R, Derks, Eske M, Evans, Patrick, Edlund, Christopher K, Crane, Jacquelyn, Fagerness, Jesen A, Osiecki, Lisa, Gallagher, Patience, Gerber, Gloria, Haddad, Stephen, Illmann, Cornelia, McGrath, Lauren M, Mayerfeld, Catherine, Arepalli, Sampath, Barlassina, Cristina, Barr, Cathy L, Bellodi, Laura, Benarroch, Fortu, Berrió, Gabriel Bedoya, Bienvenu, O Joseph, Black, Donald W, Bloch, Michael H, Brentani, Helena, Bruun, Ruth D, Budman, Cathy L, Camarena, Beatriz, Campbell, Desmond D, Cappi, Carolina, Silgado, Julio C Cardona, Cavallini, Maria C, Chavira, Denise A, Chouinard, Sylvain, Cook, Edwin H, Cookson, M R, Coric, Vladimir, Cullen, Bernadette, Cusi, Daniele, Delorme, Richard, Denys, Damiaan, Dion, Yves, Eapen, Valsama, Egberts, Karin, Falkai, Peter, Fernandez, Thomas, Fournier, Eduardo, Garrido, Helena, Geller, Daniel, Gilbert, Donald L, Girard, Simon L, Grabe, Hans J, Grados, Marco A, Greenberg, Benjamin D, Gross-Tsur, Varda, Grünblatt, Edna, Hardy, John, Heiman, Gary A, Hemmings, Sian M J, Herrera, Luis D, Hezel, Dianne M, Hoekstra, Pieter J, Jankovic, Joseph, Kennedy, James L, King, Robert A, Konkashbaev, Anuar I, Kremeyer, Barbara, Kurlan, Roger, Lanzagorta, Nuria, Leboyer, Marion, Leckman, James F, Lennertz, Leonhard, Liu, Chunyu, Lochner, Christine, Lowe, Thomas L, Lupoli, Sara, Macciardi, Fabio, Maier, Wolfgang, Manunta, Paolo, Marconi, Maurizio, McCracken, James T, Mesa Restrepo, Sandra C, Moessner, Rainald, Moorjani, Priya, Morgan, Jubel, Muller, Heike, Murphy, Dennis L, Naarden, Allan L, Nurmi, Erika, Ochoa, William Cornejo, Ophoff, Roel A, Pakstis, Andrew J, Pato, Michele T, Pato, Carlos N, Piacentini, John, Pittenger, Christopher, Pollak, Yehuda, Rauch, Scott L, Renner, Tobias, Reus, Victor I, Richter, Margaret A, Riddle, Mark A, Robertson, Mary M, Romero, Roxana, Rosário, Maria C, Rosenberg, David, Ruhrmann, Stephan, Sabatti, Chiara, Salvi, Erika, Sampaio, Aline S, Samuels, Jack, Sandor, Paul, Service, Susan K, Sheppard, Brooke, Singer, Harvey S, Smit, Jan H, Stein, Dan J, Strengman, Eric, Tischfield, Jay A, Turiel, Maurizio, Valencia Duarte, Ana V, Vallada, Homero, Veenstra-VanderWeele, Jeremy, Walitza, Susanne, Wang, Ying, Weale, Mike, Weiss, Robert, Wendland, Jens R, Westenberg, Herman G M, Shugart, Yin Yao, Hounie, Ana G, Miguel, Euripedes C, Nicolini, Humberto, Wagner, Michael, Ruiz-Linares, Andres, Cath, Danielle C, McMahon, William, Posthuma, Danielle, Oostra, Ben A, Nestadt, Gerald, Rouleau, Guy A, Purcell, Shaun, Jenike, Michael A, Heutink, Peter, Hanna, Gregory L, Conti, David V, Arnold, Paul D, Freimer, Nelson B, Stewart, S Evelyn, Knowles, James A, Cox, Nancy J, and Pauls, David L

Published
2015

30. OCD Family Functioning Scale

Author

Stewart, S. Evelyn, primary, Hu, Yu-Pei, additional, Hezel, Dianne M., additional, Proujansky, Rachel, additional, Lamstein, Abby, additional, Walsh, Casey, additional, Ben-Joseph, Elana Pearl, additional, Gironda, Christina, additional, Jenike, Michael, additional, Geller, Daniel A., additional, and Pauls, David L., additional

Published
2011
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32. LETTERS.

Author

CAMPA, EVAN, KRUSE, MERRIEL, ALTMAN, CLAIRE, GESSNER, CHARLES H., KASS, SHARON, HEZEL, DIANNE M., KAYSER, REILLY, SIMPSON, H. BLAIR, SCHWIMMER, JACKIE, and BREWER, KATRINA

Published
2021

33. Measurement fidelity of clinical assessment methods in a global study on identifying reproducible brain signatures of obsessive-compulsive disorder.

Author

Shavitt RG, Sheshachala K, Hezel DM, Wall MM, Balachander S, Lochner C, Narayanaswamy JC, Costa DLC, de Mathis MA, van Balkom AJLM, de Joode NT, Narayan M, van den Heuvel OA, Stein DJ, Miguel EC, Simpson HB, and Reddy YCJ

Subjects
Humans, Reproducibility of Results, Brain, Psychiatric Status Rating Scales, Obsessive-Compulsive Disorder diagnosis
Abstract

Objective: To describe the steps of ensuring measurement fidelity of core clinical measures in a five-country study on brain signatures of obsessive-compulsive disorder (OCD)., Method: We collected data using standardized instruments, which included the Yale-Brown Obsessive-Compulsive Scale (YBOCS), the Dimensional YBOCS (DYBOCS), the Brown Assessment of Beliefs Scale (BABS), the 17-item Hamilton Depression Scale (HAM-D), the Hamilton Anxiety Scale (HAM-A), and the Structured Clinical Interview for DSM-5 (SCID). Steps to ensure measurement fidelity included translating instruments, developing a clinical decision manual, and continuing reliability training with 11-13 transcripts of each instrument by 13 independent evaluators across sites over 4 years. We use multigroup confirmatory factor analysis (MGCFA) to report interrater reliability (IRR) among the evaluators and factor structure for each scale in 206 participants with OCD., Results: The overall IRR for most scales was high (ICC > 0.94) and remained good to excellent throughout the study. Consistent factor structures (configural invariance) were found for all instruments across the sites, while similarity in the factor loadings for the items (metric invariance) could be established only for the DYBOCS and the BABS., Conclusions: It is feasible to achieve measurement fidelity of clinical measures in multisite, multilinguistic global studies, despite the challenges inherent to such endeavors. Future studies should not only report IRR but also consider reporting methods of standardization of data collection and measurement invariance to identify factor structures of core clinical measures. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Published
2023
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