Smoking during pregnancy and psychiatric disorders in preschoolers

Lise Carol Ellis1, Turid Suzanne Berg-Nielsen, Stian Lydersen

  • 1NTNU Social Science, Department of Psychology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway. lise.ellis@gmail.com

Insights

Smoking during pregnancy increases the risk for attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) in 4-year-olds. These findings indicate a significant association between prenatal smoking and childhood behavioral issues.

Area of Science:

  • Child Psychiatry
  • Developmental Psychology
  • Public Health

Background:

  • Maternal smoking during pregnancy is a significant public health concern.
  • Potential links between prenatal smoke exposure and offspring psychiatric disorders require further investigation.
  • Controlling for confounding factors is crucial in understanding these associations.

Purpose of the Study:

  • To investigate the relationship between smoking during pregnancy and psychiatric disorders in 4-year-old children.
  • To assess the risk for attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD).
  • To control for a comprehensive set of potential confounding variables.

Main Methods:

  • A community sample of 995 4-year-olds in Trondheim, Norway, was assessed.
  • Parents were interviewed using the Preschool Age Psychiatric Assessment, gathering data on prenatal smoking.
  • Propensity score analysis was employed to adjust for confounding variables.

Main Results:

  • Prenatal smoking was significantly associated with an increased odds for ADHD (OR = 2.59).
  • Prenatal smoking was significantly associated with an increased odds for ODD (OR = 2.69).
  • Increased odds were also observed for comorbid ADHD and ODD (OR = 2.55).

Conclusions:

  • Smoking during pregnancy is linked to a higher risk of ADHD and ODD symptoms in 4-year-olds.
  • The association between prenatal smoking and ADHD/ODD is independent of each other.
  • These findings underscore the importance of smoking cessation during pregnancy to prevent adverse child psychiatric outcomes.

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