Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME Studies
Linear regression is often used to estimate associations between chemical exposures and neurodevelopment at the mean of the outcome. However, the potential effect of chemicals may be greater among individuals at the ‘tails’ of outcome distributions. Here, we investigated distributional effects on th...
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doaj-42079794f1024e42861c817f7664fb622021-01-31T00:03:28ZengMDPI AGInternational Journal of Environmental Research and Public Health1661-78271660-46012021-01-01181254125410.3390/ijerph18031254Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME StudiesMarisa A. Patti0Craig Newschaffer1Melissa Eliot2Ghassan B. Hamra3Aimin Chen4Lisa A. Croen5M. Daniele Fallin6Irva Hertz-Picciotto7Geetika Kalloo8Jane C. Khoury9Bruce P. Lanphear10Kristen Lyall11Kimberly Yolton12Joseph M. Braun13Department of Epidemiology, Brown University, Providence, RI 02903, USAA.J. Drexel Autism Institute, Drexel University, Philadelphia, PA 19104, USADepartment of Epidemiology, Brown University, Providence, RI 02903, USADepartment of Epidemiology, Johns Hopkins University, Baltimore, MD 21205, USADepartment of Biostatistics Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA 19104, USADivision of Research, Kaiser Permanente Northern California, Oakland, CA 94612, USADepartment of Mental Health, Johns Hopkins University, Baltimore, MD 21205, USADepartment of Public Health Sciences, University of California, Davis, CA 95616, USAHealthCore Inc., Wilmington, DE 19801, USADivision of Biostatistics and Epidemiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45267, USAFaculty of Health Sciences, Simon Fraser University, Vancouver, BC, CanadaA.J. Drexel Autism Institute, Drexel University, Philadelphia, PA 19104, USADepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USADepartment of Epidemiology, Brown University, Providence, RI 02903, USALinear regression is often used to estimate associations between chemical exposures and neurodevelopment at the mean of the outcome. However, the potential effect of chemicals may be greater among individuals at the ‘tails’ of outcome distributions. Here, we investigated distributional effects on the associations between gestational phthalate exposure and child Autism Spectrum Disorder (ASD)-related behaviors using quantile regression. We harmonized data from the Early Autism Risk Longitudinal Investigation (EARLI) (<i>n</i> = 140) Study, an enriched-risk cohort of mothers who had a child with ASD, and the Health Outcomes and Measures of the Environment (HOME) Study (<i>n</i> = 276), a general population cohort. We measured concentrations of 9 phthalate metabolites in urine samples collected twice during pregnancy. Caregivers reported children’s ASD-related behaviors using the Social Responsiveness Scale (SRS) at age 3–8 years; higher scores indicate more ASD-related behaviors. In EARLI, associations between phthalate concentrations and SRS scores were predominately inverse or null across SRS score quantiles. In HOME, positive associations of mono-n-butyl phthalate, monobenzyl phthalate, mono-isobutyl phthalate, and di-2-ethylhexyl phthalate concentrations with SRS scores increased in strength from the median to 95th percentile of SRS scores. These results suggest associations between phthalate concentrations and SRS scores may be stronger in individuals with higher SRS scores.https://www.mdpi.com/1660-4601/18/3/1254phthalatesprenatalendocrine-disrupting chemicalsneurodevelopment |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Marisa A. Patti Craig Newschaffer Melissa Eliot Ghassan B. Hamra Aimin Chen Lisa A. Croen M. Daniele Fallin Irva Hertz-Picciotto Geetika Kalloo Jane C. Khoury Bruce P. Lanphear Kristen Lyall Kimberly Yolton Joseph M. Braun |
spellingShingle |
Marisa A. Patti Craig Newschaffer Melissa Eliot Ghassan B. Hamra Aimin Chen Lisa A. Croen M. Daniele Fallin Irva Hertz-Picciotto Geetika Kalloo Jane C. Khoury Bruce P. Lanphear Kristen Lyall Kimberly Yolton Joseph M. Braun Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME Studies International Journal of Environmental Research and Public Health phthalates prenatal endocrine-disrupting chemicals neurodevelopment |
author_facet |
Marisa A. Patti Craig Newschaffer Melissa Eliot Ghassan B. Hamra Aimin Chen Lisa A. Croen M. Daniele Fallin Irva Hertz-Picciotto Geetika Kalloo Jane C. Khoury Bruce P. Lanphear Kristen Lyall Kimberly Yolton Joseph M. Braun |
author_sort |
Marisa A. Patti |
title |
Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME Studies |
title_short |
Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME Studies |
title_full |
Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME Studies |
title_fullStr |
Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME Studies |
title_full_unstemmed |
Gestational Exposure to Phthalates and Social Responsiveness Scores in Children Using Quantile Regression: The EARLI and HOME Studies |
title_sort |
gestational exposure to phthalates and social responsiveness scores in children using quantile regression: the earli and home studies |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1661-7827 1660-4601 |
publishDate |
2021-01-01 |
description |
Linear regression is often used to estimate associations between chemical exposures and neurodevelopment at the mean of the outcome. However, the potential effect of chemicals may be greater among individuals at the ‘tails’ of outcome distributions. Here, we investigated distributional effects on the associations between gestational phthalate exposure and child Autism Spectrum Disorder (ASD)-related behaviors using quantile regression. We harmonized data from the Early Autism Risk Longitudinal Investigation (EARLI) (<i>n</i> = 140) Study, an enriched-risk cohort of mothers who had a child with ASD, and the Health Outcomes and Measures of the Environment (HOME) Study (<i>n</i> = 276), a general population cohort. We measured concentrations of 9 phthalate metabolites in urine samples collected twice during pregnancy. Caregivers reported children’s ASD-related behaviors using the Social Responsiveness Scale (SRS) at age 3–8 years; higher scores indicate more ASD-related behaviors. In EARLI, associations between phthalate concentrations and SRS scores were predominately inverse or null across SRS score quantiles. In HOME, positive associations of mono-n-butyl phthalate, monobenzyl phthalate, mono-isobutyl phthalate, and di-2-ethylhexyl phthalate concentrations with SRS scores increased in strength from the median to 95th percentile of SRS scores. These results suggest associations between phthalate concentrations and SRS scores may be stronger in individuals with higher SRS scores. |
topic |
phthalates prenatal endocrine-disrupting chemicals neurodevelopment |
url |
https://www.mdpi.com/1660-4601/18/3/1254 |
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