Evaluation of the Greater Manchester Smoke Free Pregnancy Programme

The main work package is a three-arm randomised controlled trial of financial Incentives for Preventing Postpartum return to Smoking (FIPPS)

Background: Financial incentives are an effective way of helping women to stop smoking during pregnancy. Unfortunately, most women who stop smoking at this time return to smoking within 12 months of the infant’s birth. There is no evidence for interventions that are effective at preventing postpartum smoking relapse. Financial incentives provided after the birth may help women to sustain cessation. This randomised controlled trial will assess the effectiveness and cost effectiveness of financial incentives to help women who are abstinent from smoking at end of pregnancy to avoid return to smoking up to 12 months postpartum.

Methods: This is a UK-based, multi-centre, three-arm, superiority, parallel group, individually randomised controlled trial, with 1:1:1 allocation. It will compare the effectiveness of two financial incentive interventions with each other (one intervention for up to three months postpartum offering up to £120 of incentives (£60 for the participant and £60 for a significant other support); the other for up to 12 months postpartum with up to £300 of incentives (£240 for the participant and £60 for a significant other support)) and with a no incentives/usual care control group. Eligible women will be between 34 weeks gestation and two weeks postpartum, abstinent from smoking for at least four weeks, have an expired carbon monoxide (CO) reading