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Racial differences in the effects of postnatal environmental tobacco smoke on neurodevelopment

Xiaohui Xu1, Robert L Cook, Vito A Ilacqua

  • 1University of Florida, College of Public Health and Health Professions, Department of Epidemiology and Biostatistics, 101 S. Newell Dr, Room 3116, Gainesville, FL 32610-0182, USA. xhxu@phhp.ufl.edu

Pediatrics
|September 22, 2010
PubMed

Insights

Environmental tobacco smoke exposure, measured by cotinine levels, is linked to increased attention-deficit/hyperactivity disorder (ADHD) risk in children. Racial disparities influence this association, with higher risks observed in Mexican American and other racial groups.

Area of Science:

  • Environmental Health
  • Pediatrics
  • Neurodevelopmental Disorders

Background:

  • Postnatal exposure to environmental tobacco smoke (ETS) is a public health concern.
  • Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder in children.
  • Serum cotinine levels serve as a biomarker for ETS exposure.

Purpose of the Study:

  • To examine the association between postnatal ETS exposure and ADHD in children aged 4-15.
  • To investigate potential interactions between race and cotinine levels in relation to ADHD.

Main Methods:

  • Utilized data from the 2001-2004 National Health and Nutrition Examination Survey.
  • Employed logistic regression models to assess associations between serum cotinine levels and ADHD prevalence.
  • Controlled for maternal smoking during pregnancy.

Main Results:

  • A positive association was found between increased serum cotinine levels and ADHD prevalence.
  • The impact of cotinine levels on ADHD varied significantly by race.
  • Elevated cotinine levels were associated with increased ADHD odds in Mexican American children (OR=2.72) and children from other racial groups (OR=5.32), but not in non-Hispanic white or black children.

Conclusions:

  • Findings suggest potential racial disparities in the neurobehavioral effects of ETS exposure on children.
  • These results highlight the need for further research into ETS and child behavioral outcomes across different racial demographics.
Abstract

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