Longitudinal cohort survey of women's smoking behaviour and attitudes in pregnancy: study methods and baseline data

Orton, Sophie and Bowker, Katharine and Cooper, Sue and Naughton, Felix and Ussher, Michael and Pickett, Kate E. and Leonardi-Bee, Jo and Sutton, Stephen and Dhalwani, Nafeesa N. and Coleman, Tim (2014) Longitudinal cohort survey of women's smoking behaviour and attitudes in pregnancy: study methods and baseline data. BMJ Open, 4 (5). pp. 1-10. ISSN 2044-6055

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Abstract

Objectives: To report 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: 3,265 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 enrolment 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 three months postnatally); response rate, participants’ sociodemographic characteristics.

Results: 1101 (33.7%, 95% CI=32.1%–35.4%) women were eligible for inclusion in the cohort, and of these 850 (77.2%, 95% CI=74.6%-79.6%) were recruited. Within the cohort, 57.4% (N = 488, 95% CI=54.1%-60.7%) reported to be current smokers. Current smokers were significantly younger than ex-smokers (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.

Item Type: Article
Keywords: Smoking, Tobacco, Pregnancy, Prenatal, Smoking cessation, Smoking in pregnancy
Schools/Departments: University of Nottingham, UK > Faculty of Medicine and Health Sciences > School of Medicine > Division of Primary Care
University of Nottingham, UK > Faculty of Medicine and Health Sciences > School of Medicine > Division of Epidemiology and Public Health
Identification Number: https://doi.org/10.1136/bmjopen-2014-004915
Related URLs:
URLURL Type
http://bmjopen.bmj.com/content/4/5/e004915.full?keytype=ref&ijkey=TYRvN1527OB9beXPublisher
Depositing User: Whitemore, Rachel
Date Deposited: 23 Mar 2015 08:48
Last Modified: 10 Dec 2016 17:27
URI: http://eprints.nottingham.ac.uk/id/eprint/28555

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