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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.
Abstract:
The overall objective of this study was to determine whether smoking during pregnancy is related to psychiatric disorders in 4-year-olds while controlling for a wide range of potential confounding variables (i.e. parental anxiety, depression, personality disorders, drug abuse, and socio-economic characteristics). Parents of a community sample of 4-year-olds (N = 995) residing in the city of Trondheim, Norway were interviewed using the Preschool Age Psychiatric Assessment, which includes information on prenatal smoking. After adjusting for potential confounding variables using the propensity score, smoking during pregnancy was found to increase the odds for attention-deficit/hyperactivity disorder (ADHD) OR = 2.59 (CI 1.5-4.34, p < 0.001), oppositional defiant disorder (ODD) OR = 2.69 (CI 1.84-3.91, p = 0.02) and comorbid OR = 2.55 (CI 1.24-5.23, p < 0.001). Prenatal smoking during pregnancy is associated with an increased risk for symptoms of ADHD and ODD independently of each other, in 4-year-olds.
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