6 results on '"Sudan, Madhuri"'
Search Results
2. Maternal cell phone use during pregnancy and child behavioral problems in five birth cohorts
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Birks, Laura, Guxens, Mònica, Papadopoulou, Eleni, Alexander, Jan, Ballester, Ferran, Estarlich, Marisa, Gallastegi, Mara, Ha, Mina, Haugen, Margaretha, Huss, Anke, Kheifets, Leeka, Lim, Hyungryul, Olsen, Jørn, Santa-Marina, Loreto, Sudan, Madhuri, Vermeulen, Roel, Vrijkotte, Tanja, Cardis, Elisabeth, Vrijheid, Martine, LS IRAS EEPI EXAS (Arb.hyg+bl.st.kar.), LS IRAS EEPI GRA (Gezh.risico-analyse), dIRAS RA-2, Child and Adolescent Psychiatry / Psychology, LS IRAS EEPI EXAS (Arb.hyg+bl.st.kar.), LS IRAS EEPI GRA (Gezh.risico-analyse), dIRAS RA-2, APH - Health Behaviors & Chronic Diseases, AR&D - Amsterdam Reproduction & Development, Public and occupational health, APH - Aging & Later Life, and APH - Methodology
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Pediatrics ,Denmark ,0302 clinical medicine ,Phone ,Pregnancy ,Medicine ,030212 general & internal medicine ,Prospective Studies ,Child Behavior Checklist ,Child ,lcsh:Environmental sciences ,General Environmental Science ,Netherlands ,lcsh:GE1-350 ,Child health ,Norway ,Mental Disorders ,Confounding ,Strengths and Difficulties Questionnaire ,Child, Preschool ,Prenatal Exposure Delayed Effects ,Cohort ,language ,Female ,Infants - Psicologia ,medicine.medical_specialty ,Child behavior ,Offspring ,Cell phones ,Mothers ,Cura prenatal ,Article ,Danish ,03 medical and health sciences ,Electromagnetic radiation ,Republic of Korea ,Journal Article ,Humans ,Dones embarassades ,Retrospective Studies ,Problem Behavior ,business.industry ,medicine.disease ,language.human_language ,Cell Phone Use ,Attention deficit disorder with hyperactivity ,Telèfon mòbil ,Spain ,business ,030217 neurology & neurosurgery ,Demography - Abstract
Introduction: Previous studies have reported associations between prenatal cell phone use and child behavioral problems, but findings have been inconsistent and based on retrospective assessment of cell phone use. This study aimed to assess this association in a multi-national analysis, using data from three cohorts with prospective data on prenatal cell phone use, together with previously published data from two cohorts with retrospectively collected cell phone use data. Methods: We used individual participant data from 83,884 mother-child pairs in the five cohorts from Denmark (1996–2002), Korea (2006–2011), the Netherlands (2003–2004), Norway (2004–2008), and Spain (2003–2008). We categorized cell phone use into none, low, medium, and high, based on frequency of calls during pregnancy reported by the mothers. Child behavioral problems (reported by mothers using the Strengths and Difficulties Questionnaire or Child Behavior Checklist) were classified in the borderline/clinical and clinical ranges using validated cut-offs in children aged 5–7 years. Cohort specific risk estimates were meta-analyzed. Results: Overall, 38.8% of mothers, mostly from the Danish cohort, reported no cell phone use during pregnancy and these mothers were less likely to have a child with overall behavioral, hyperactivity/inattention or emotional problems. Evidence for a trend of increasing risk of child behavioral problems through the maternal cell phone use categories was observed for hyperactivity/inattention problems (OR for problems in the clinical range: 1.11, 95%CI 1.01, 1.22; 1.28, 95%CI 1.12, 1.48, among children of medium and high users, respectively). This association was fairly consistent across cohorts and between cohorts with retrospectively and prospectively collected cell phone use data. Conclusions: Maternal cell phone use during pregnancy may be associated with an increased risk for behavioral problems, particularly hyperactivity/inattention problems, in the offspring. The interpretation of these results is unclear as uncontrolled confounding may influence both maternal cell phone use and child behavioral problems. Keywords: Attention deficit disorder with hyperactivity, Cell phones, Child behavior, Child health, Electromagnetic radiation, Pregnancy
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- 2017
3. Associations of Maternal Cell-Phone Use During Pregnancy With Pregnancy Duration and Fetal Growth in 4 Birth Cohorts.
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Tsarna, Ermioni, Reedijk, Marije, Birks, Laura Ellen, Guxens, Mònica, Ballester, Ferran, Ha, Mina, Jiménez-Zabala, Ana, Kheifets, Leeka, Lertxundi, Aitana, Lim, Hyung-Ryul, Olsen, Jorn, Safont, Llúcia González, Sudan, Madhuri, Cardis, Elisabeth, Vrijheid, Martine, Vrijkotte, Tanja, Huss, Anke, and Vermeulen, Roel
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PREGNANCY complication risk factors ,BIRTH weight ,CONFIDENCE intervals ,GESTATIONAL age ,PREMATURE infants ,EVALUATION of medical care ,PREGNANT women ,SELF-evaluation ,CELL phones ,FETAL development ,PRENATAL exposure delayed effects ,ODDS ratio ,PREGNANCY - Abstract
Results from studies evaluating potential effects of prenatal exposure to radio-frequency electromagnetic fields from cell phones on birth outcomes have been inconsistent. Using data on 55,507 pregnant women and their children from Denmark (1996–2002), the Netherlands (2003–2004), Spain (2003–2008), and South Korea (2006–2011), we explored whether maternal cell-phone use was associated with pregnancy duration and fetal growth. On the basis of self-reported number of cell-phone calls per day, exposure was grouped as none, low (referent), intermediate, or high. We examined pregnancy duration (gestational age at birth, preterm/postterm birth), fetal growth (birth weight ratio, small/large size for gestational age), and birth weight variables (birth weight, low/high birth weight) and meta-analyzed cohort-specific estimates. The intermediate exposure group had a higher risk of giving birth at a lower gestational age (hazard ratio = 1.04, 95% confidence interval: 1.01, 1.07), and exposure-response relationships were found for shorter pregnancy duration (P < 0.001) and preterm birth (P = 0.003). We observed no association with fetal growth or birth weight. Maternal cell-phone use during pregnancy may be associated with shorter pregnancy duration and increased risk of preterm birth, but these results should be interpreted with caution, since they may reflect stress during pregnancy or other residual confounding rather than a direct effect of cell-phone exposure. [ABSTRACT FROM AUTHOR]
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- 2019
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4. Maternal cell phone use during pregnancy and child cognition at age 5 years in 3 birth cohorts.
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Sudan, Madhuri, Birks, Laura Ellen, Aurrekoetxea, Juan J., Ferrero, Amparo, Gallastegi, Mara, Guxens, Mònica, Ha, Mina, Lim, Hyungryul, Olsen, Jorn, González-Safont, Llúcia, Vrijheid, Martine, and Kheifets, Leeka
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CELL phone users , *PREGNANCY , *CHILDREN , *COGNITION , *INTELLECT , *META-analysis - Abstract
Abstract Background There have been few studies of children's cognitive development in relation to mothers' cell phone use, and most were limited to outcomes at age 3 years or younger. We examined the relationship between maternal cell phone use during pregnancy and cognitive performance in 5-year old children. Methods This study included data from 3 birth cohorts: the Danish National Birth Cohort (DNBC) (n = 1209), Spanish Environment and Childhood Project (INMA) (n = 1383), and Korean Mothers and Children's Environment Health Study (MOCEH) (n = 497). All cohorts collected information about maternal cell phone use during pregnancy and cognitive performance in children at age 5. We performed linear regression to compute mean differences (MD) and 95% confidence intervals (CI) in children's general, verbal, and non-verbal cognition scores comparing frequency of maternal prenatal cell phone use with adjustments for numerous potential confounding factors. Models were computed separately for each cohort and using pooled data in meta-analysis. Results No associations were detected between frequency of prenatal cell phone use and children's cognition scores. Scores tended to be lower in the highest frequency of use category; MD (95% CI) in general cognition scores were 0.78 (−0.76, 2.33) for none, 0.11 (−0.81, 1.03) for medium, and −0.41 (−1.54, 0.73) for high compared to low frequency of use. This pattern was seen across all cognitive dimensions, but the results were imprecise overall. Conclusion We observed patterns of lower mean cognition scores among children in relation to high frequency maternal prenatal cell phone use. The causal nature and mechanism of this relationship remain unknown. Highlights • Prenatal maternal cell phone use may be related to child cognition. • Cognition scores are slightly lower in relation to higher frequency use, although imprecise. • The causal mechanisms are unknown at this time. • The association is likely affected by social and behavioral factors. [ABSTRACT FROM AUTHOR]
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- 2018
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5. Prospective cohort analysis of cellphone use and emotional and behavioural difficulties in children.
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Sudan, Madhuri, Olsen, Jorn, Arah, Oyebuchi A., Obel, Carsten, and Kheifets, Leeka
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BEHAVIOR disorders in children ,CONFIDENCE intervals ,LONGITUDINAL method ,PARENTING ,QUESTIONNAIRES ,RESEARCH funding ,SCALE analysis (Psychology) ,CELL phones ,CROSS-sectional method ,DATA analysis software ,DESCRIPTIVE statistics ,ODDS ratio ,CHILDREN ,DISEASE risk factors - Published
- 2016
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6. Complexities of sibling analysis when exposures and outcomes change with time and birth order.
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Sudan, Madhuri, Kheifets, Leeka I., Arah, Onyebuchi A., Divan, Hozefa A., and Olsen, Jørn
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HEALTH outcome assessment , *CELL phones , *COHORT analysis , *BIRTH order , *PROBLEM solving - Abstract
In this study, we demonstrate the complexities of performing a sibling analysis with a re-examination of associations between cell phone exposures and behavioral problems observed previously in the Danish National Birth Cohort. Children (52,680; including 5441 siblings) followed up to age 7 were included. We examined differences in exposures and behavioral problems between siblings and non-siblings and by birth order and birth year. We estimated associations between cell phone exposures and behavioral problems while accounting for the random family effect among siblings. The association of behavioral problems with both prenatal and postnatal exposure differed between siblings (odds ratio (OR): 1.07; 95% confidence interval (CI): 0.69-1.66) and non-siblings (OR: 1.54; 95% CI: 1.36-1.74) and within siblings by birth order; the association was strongest for first-born siblings (OR: 1.72; 95% CI: 0.86-3.42) and negative for later-born siblings (OR: 0.63; 95% CI: 0.31-1.25), which may be because of increases in cell phone use with later birth year. Sibling analysis can be a powerful tool for (partially) accounting for confounding by invariant unmeasured within-family factors, but it cannot account for uncontrolled confounding by varying family-level factors, such as those that vary with time and birth order. [ABSTRACT FROM AUTHOR]
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- 2014
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