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

Orton, Sophie, Bowker, Katharine, Cooper, Sue, Naughton, Felix, Ussher, Michael, Pickett, Kate E, Leonardi-Bee, Jo, Sutton, Stephen, 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). ISSN 2044-6055

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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 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
Additional Information: This article has a correction: Please see: BMJ Open 2015;5 (http://bmjopen.bmj.com/content/5/11/e004915corr1) This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 3.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/3.0/
Uncontrolled Keywords: adult,attitude to health,female,humans,longitudinal studies,maternal behavior,pregnancy,prospective studies,research design,smoking,surveys and questionnaires,young adult
Faculty \ School: Faculty of Medicine and Health Sciences > School of Health Sciences
Depositing User: Pure Connector
Date Deposited: 06 Jan 2017 00:02
Last Modified: 22 Oct 2022 02:04
URI: https://ueaeprints.uea.ac.uk/id/eprint/61938
DOI: 10.1136/bmjopen-2014-004915

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