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Smoking during pregnancy and hyperactivity-inattention in the offspring—comparing results from three Nordic cohorts
Uppsala universitet, Institutionen för psykologi.ORCID-id: 0000-0003-1209-8802
Vise andre og tillknytning
2009 (engelsk)Inngår i: International Journal of Epidemiology, ISSN 0300-5771, E-ISSN 1464-3685, Vol. 38, nr 3, s. 698-705Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background Prenatal exposure to smoking has been associated with Attention Deficit Hyperactivity Disorder (ADHD) in a number of epidemiological studies. However, mothers with the ADHD phenotype may ‘treat’ their problem by smoking and therefore be more likely to smoke even in a society where smoking is not acceptable. This will cause genetic confounding if ADHD has a heritable component, especially in populations with low prevalence rates of smoking since this reason for smoking is expected to be proportionally more frequent in a population with few ‘normal’ smokers. We compared the association in cohorts with different smoking frequencies.

Methods A total of 20 936 women with singleton pregnancies were identified within three population-based pregnancy cohorts in Northern Finland (1985–1986) and in Denmark (1984–1987 and 1989–1991). We collected self-reported data on their pre-pregnancy and pregnancy smoking habits and followed the children to school age where teachers and parents rated hyperactivity and inattention symptoms.

Results Children, whose mothers smoked during pregnancy, had an increased prevalence of a high hyperactivity-inattention score compared with children of nonsmokers in each of the cohorts after adjustment for confounders but we found no statistical significant difference between the associations across the cohorts.

Conclusion The estimated association was not strongest in the population with the fewest smokers which does not support the hypothesis that the association is entirely due to genetic confounding.

sted, utgiver, år, opplag, sider
2009. Vol. 38, nr 3, s. 698-705
Emneord [en]
smoking, confounding, prenatal, child behaviour, ADHD
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-16796DOI: 10.1093/ije/dym290ISI: 000268810100016PubMedID: 18250076OAI: oai:DiVA.org:miun-16796DiVA, id: diva2:556414
Merknad

IJE Advance Access originally published online on February 2, 2008

Tilgjengelig fra: 2008-02-11 Laget: 2012-08-24 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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