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Evaluation of a complex healthcare intervention to increase smoking cessation in pregnant women: interrupted time series analysis with economic evaluation

Lookup NU author(s): Dr Ruth Bell, Dr Svetlana Glinyanaya, Dr Zelda Van Der Waal, Dr Andrew Close, Eoin Moloney, Dr Vera Araujo Soares, Dr Eugene Milne, Professor Luke Vale, Professor Martin White, Professor Stephen Rushton

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

Objectives To evaluate the effectiveness of a complex intervention to improve referral and treatment of pregnant smokers in routine practice, and to assess the incremental costs to the National Health Service (NHS) per additional woman quitting smoking. Design Interrupted time series analysis of routine data before and after introducing the intervention, within-study economic evaluation. Setting Eight acute NHS hospital trusts and 12 local authority areas in North East England. Participants 37 726 records of singleton delivery including 10 594 to mothers classified as smoking during pregnancy. Interventions A package of measures implemented in trusts and smoking cessation services, aimed at increasing the proportion of pregnant smokers quitting during pregnancy, comprising skills training for healthcare and smoking cessation staff; universal carbon monoxide monitoring with routine opt-out referral for smoking cessation support; provision of carbon monoxide monitors and supporting materials; and an explicit referral pathway and follow-up protocol. Main outcome measures Referrals to smoking cessation services; probability of quitting smoking during pregnancy; additional costs to health services; incremental cost per additional woman quitting. Results After introduction of the intervention, the referral rate increased more than twofold (incidence rate ratio=2.47, 95% CI 2.16 to 2.81) and the probability of quitting by delivery increased (adjusted OR=1.81, 95% CI 1.54 to 2.12). The additional cost per delivery was £31 and the incremental cost per additional quit was £952; 31 pregnant women needed to be treated for each additional quitter. Conclusions The implementation of a system-wide complex healthcare intervention was associated with significant increase in rates of quitting by delivery.


Publication metadata

Author(s): Bell R, Glinianaia S, van der Waal Z, Close A, Moloney E, Jones S, Araújo-Soares V, Hamilton S, Milne E, Shucksmith J, Vale L, Willmore M, White M, Rushton S

Publication type: Article

Publication status: Published

Journal: Tobacco Control

Year: 2018

Volume: 27

Issue: 1

Pages: 90-98

Print publication date: 01/01/2018

Online publication date: 15/02/2017

Acceptance date: 04/01/2017

ISSN (print): 0964-4563

ISSN (electronic): 1468-3318

Publisher: BMJ Group

URL: https://doi.org/10.1136/tobaccocontrol-2016-053476

DOI: 10.1136/tobaccocontrol-2016-053476

PubMed id: 28202783


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