title: Partner's smoking: a major determinant for changes in women's smoking behaviour during and after pregnancy.
abstract: To study determinants for changes in maternal smoking behaviour during and after pregnancy, questionnaire information on smoking habits was recorded in a cohort of 3710 Norwegian women during early pregnancy, at delivery, and one year later. Of 3039 cohabiting women with complete information on smoking at all three occasions 31% smoked in early pregnancy 23% in the late pregnancy and 28% one year after delivery. Among the cohabiting mothers who smoked in early pregnancy, 44% stopped during pregnancy. After adjusting for confounding factors, the odds ratio for smoking cessation among these women who had cohabitants who smoked as opposed to not smoking was 0.2 (95% CI: 0.1-0.2). Among cohabiting non-smoking women during late pregnancy the odds ratio for being a smoker one year after child birth was 3.0 (95% CI: 2.2-4.0), if their cohabitants smoked as opposed to not smoking. The women's smoking behaviour changes considerably during and after pregnancy and their cohabitants' smoking seems to be a major determinant for changes in their smoking behaviour.
authors.affiliation: Department of Population Health Sciences, National Institute of Public Health, Torshov, Oslo, Norway.
authors.forename: P
authors.initials: P
authors.lastname: Nafstad
authors.forename: G
authors.initials: G
authors.lastname: Botten
authors.forename: J
authors.initials: J
authors.lastname: Hagen
mesh_terms: D000328:Adult; D015331:Cohort Studies; D005260:Female; D006801:Humans; D009664:Norway / Q000453:epidemiology; D011247:Pregnancy; D015995:Prevalence; D015406:Single Parent; D012907:Smoking / Q000453:epidemiology*; D016540:Smoking Cessation / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires