Journal of the American Academy of Child & Adolescent Psychiatry
New ResearchMaternal Smoking in Pregnancy and Externalizing Behavior in 18-Month-Old Children: Results From a Population-Based Prospective Study
Section snippets
Study Design and Participants
The data collection was conducted as part of the Norwegian Mother and Child Cohort Study (www.fhi.no/morogbarn) at the Norwegian Institute of Public Health. The target population of the Norwegian Mother and Child Cohort Study study is all women who give birth in Norway. Recruitment started in 1999 and will continue until the end of 2008. The sampling frame comprises all pregnant woman attending routine ultrasound examinations, which are performed at gestation weeks 17 to 18. The participation
Results
We found that 86.9% of the mothers did not smoke during pregnancy, 9.4% smoked 1 to 9 cigarettes daily, and 3.8% smoked more than 10 cigarettes daily.
In line with earlier findings, the present study found a significant sex difference in the distribution of the externalizing behaviors (x = 413.9, p = .000), with boys being overrepresented among those with the highest scores of the scale.41
The logistic regression analyses in the total sample (Table 2) also showed a noticeable significant effect
Discussion
The main goal of this study was to explore whether an association between maternal smoking in pregnancy and externalizing behavior can be documented in children as young as 18 months old. A further goal of this study was to examine whether maternal smoking in pregnancy constitutes a general or sex-specific risk.
Indeed, we could show that maternal smoking in pregnancy increased the risk for externalizing behavior in 18-month-old children after adjusting for important confounders. Smoking showed
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2021, Preventive MedicineCitation Excerpt :For instance, infants born to mothers who smoke during pregnancy are found to be at increased risk of a host of health maladies including low birth weight (Pereira et al., 2017), preterm birth (Liu et al., 2020; Soneji and Beltrán-Sánchez, 2019), birth defects (Hackshaw et al., 2011), infant mortality (Dietz et al., 2010; Salihu et al., 2003), and sudden infant death syndrome (Anderson et al., 2019). Furthermore, prenatal smoking is linked with health and developmental problems as children age, such as increased likelihood of attention-deficit hyperactivity disorder (Button et al., 2005), antisocial behavior (Stene-Larsen et al., 2009; Wakschlag et al., 2002), substance use (Cornelius et al., 2012; Goldschmidt et al., 2012), being overweight (Oken et al., 2008), and a higher prevalence of asthma and breathing difficulties (Burke et al., 2012). Although rates of cigarette use in the United States have been declining for decades, from approximately 42.4% in 1965 to 13.7% in 2018 (American Lung Association, 2019), the rising use of electronic cigarettes (e-cigarettes) is a growing public health concern (National Academies of Sciences, 2018).
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The Norwegian Mother and Child Cohort Study is supported by the Norwegian Ministry of Health, NIH/NIEHS (grant no N01-ES-85433), NIH/NINDS (grant no.1 UO1 NS 047537–01), and the Norwegian Research Council/FUGE (grant no. 151918/S10).
The authors thank Mr. Eivind Ystrøm for guidance on the item-response theoretical analysis.