Tobacco Smoke and Lead Exposure Linked to Conduct Disorder in Children
Author Information
Author(s): Joseph M. Braun, Tanya E. Froehlich, Julie L. Daniels, Kim N. Dietrich, Richard Hornung, Peggy Auinger, Bruce P. Lanphear
Primary Institution: Department of Epidemiology, University of North Carolina, Chapel Hill
Hypothesis
The study tests the hypothesis that exposures to environmental tobacco smoke and childhood lead exposure are associated with conduct disorder in U.S. children.
Conclusion
Prenatal tobacco exposure and environmental lead exposure significantly contribute to conduct disorder in U.S. children.
Supporting Evidence
- 2.06% of children met DSM-IV criteria for conduct disorder, equivalent to 560,000 U.S. children.
- Prenatal tobacco exposure was associated with a 3.00-fold increase in odds of conduct disorder.
- Children with higher blood lead levels had an 8.64-fold increase in odds of meeting conduct disorder criteria.
- Children with higher serum cotinine levels showed increased prevalence of conduct disorder symptoms.
Takeaway
Kids who are around tobacco smoke or have lead in their blood are more likely to have behavior problems.
Methodology
The study used data from the NHANES 2001-2004, examining the association of prenatal tobacco, postnatal tobacco, and environmental lead exposure with conduct disorder in children aged 8-15.
Potential Biases
Social desirability bias may have affected reporting of tobacco exposure.
Limitations
The cross-sectional nature of the data limits causal inference, and potential exposure misclassification may have occurred.
Participant Demographics
Children aged 8-15 years, with a diverse representation of race and socioeconomic status.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI, 1.36–6.63
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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