Article
Details
Citation
Orton S, Bowker K, Cooper S, Naughton F, Ussher M, Pickett KE, Leonardi-Bee J, Sutton S, Dhalwani NN & Coleman T (2014) Longitudinal cohort survey of women's smoking behaviour and attitudes in pregnancy: study methods and baseline data. BMJ Open, 4 (5), Art. No.: e004915. https://doi.org/10.1136/bmjopen-2014-004915
Abstract
Objectives: To report the methods used to assemble a contemporary pregnancy cohort for investigating influences on smoking behaviour before, during and after pregnancy and to report characteristics of women recruited.
Design: Longitudinal cohort survey.
Setting: Two maternity hospitals, Nottingham, England.
Participants: 3265 women who attended antenatal ultrasound scan clinics were offered cohort enrolment; those who were 8-26 weeks pregnant and were currently smoking or had recently stopped smoking were eligible. Cohort enrollment took place between August 2011 and August 2012.
Primary and secondary outcome measures: Prevalence of smoking at cohort entry and at two follow-up time points (34-36 weeks gestation and 3 months postnatally); response rate, participants' sociodemographic characteristics.
Results: 1101 (33.7%, 95% CI 32.1% to 35.4%) women were eligible for inclusion in the cohort, and of these 850 (77.2%, 95% CI 74.6% to 79.6%) were recruited. Within the cohort, 57.4% (N=488, 95% CI 54.1% to 60.7%) reported to be current smokers. Current smokers were significantly younger than exsmokers (p<0.05), more likely to have no formal qualifications and to not be in current paid employment compared to recent ex-smokers (p<0.001).
Conclusions: This contemporary cohort, which seeks very detailed information on smoking in pregnancy and its determinants, includes women with comparable sociodemographic characteristics to those in other UK cross-sectional studies and cohorts. This suggests that future analyses using this cohort and aimed at understanding smoking behaviour in pregnancy may produce findings that are broadly generalisable.
Journal
BMJ Open: Volume 4, Issue 5
Status | Published |
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Publication date | 31/05/2014 |
Publication date online | 14/05/2014 |
Date accepted by journal | 28/04/2014 |
URL | |
Publisher | BMJ Publishing Group |
eISSN | 2044-6055 |
People (1)
Professor of Behavioural Medicine, Institute for Social Marketing