Financial incentives for smoking cessation in pregnancy: randomised controlled trial

Tappin, David; Bauld, Linda; Purves, David; Boyd, Kathleen; Sinclair, Lesley; MacAskill, Susan; McKell, Jennifer; Friel, Brenda; McConnachie, Alex; Caestecker, Linda de; Tannahill, Carol; Radley, Andrew; Coleman, Tim

Abstract

Objective: To assess the efficacy of a financial incentive added to routine specialist pregnancy stop smoking services versus routine care to help pregnant smokers quit.

Design: Phase II therapeutic exploratory single centre, individually randomised controlled parallel group superiority trial.

Setting: One large health board area with a materially deprived, inner city population in the west of Scotland, United Kingdom.

Participants: 612 self reported pregnant smokers in NHS Greater Glasgow and Clyde who were English speaking, at least 16 years of age, less than 24 weeks pregnant, and had an exhaled carbon monoxide breath test result of 7 ppm or more. 306 women were randomised to incentives and 306 to control.

Interventions: The control group received routine care, which was the offer of a face to face appointment to discuss smoking and cessation and, for those who attended and set a quit date, the offer of free nicotine replacement therapy for 10 weeks provided by pharmacy services, and four, weekly support phone calls. The intervention group received routine care plus the offer of up to £400 of shopping vouchers: £50 for attending a face to face appointment and setting a quit date; then another £50 if at four weeks’ post-quit date exhaled carbon monoxide confirmed quitting; a further £100 was provided for continued validated abstinence of exhaled carbon monoxide after 12 weeks; a final £200 voucher was provided for validated abstinence of exhaled carbon monoxide at 34-38 weeks’ gestation.

Main outcome measure: The primary outcome was cotinine verified cessation at 34-38 weeks’ gestation through saliva (

Citation

Tappin, D., Bauld, L., Purves, D., Boyd, K., Sinclair, L., MacAskill, S., …Coleman, T. (2015). Financial incentives for smoking cessation in pregnancy: randomised controlled trial. BMJ, 350, Article h134. https://doi.org/10.1136/bmj.h134

• Journal Article Type: Article
• Acceptance Date: Dec 9, 2014
• Publication Date: Jan 27, 2015
• Deposit Date: Oct 27, 2017
• Publicly Available Date: Oct 27, 2017
• Journal: BMJ
• Print ISSN: 0959-8138
• Electronic ISSN: 1756-1833
• Publisher: BMJ Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 350
• Article Number: h134
• DOI: https://doi.org/10.1136/bmj.h134
• Keywords: Financial incentives; Smoking cessation; Pregnancy; Randomised controlled trial
• Public URL: https://nottingham-repository.worktribe.com/output/742588
• Publisher URL: http://www.bmj.com/content/350/bmj.h134
• Contract Date: Oct 27, 2017