Effectiveness of an offer of the Smoke Free smartphone application for smoking cessation: protocol for a randomized controlled trial.

Jackson, Sarah E; Perski, Olga; Crane, David; Michie, Susan; West, Robert; Brown, Jamie · Addiction · 2019

rct · Level II

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Abstract

Smartphone applications (apps) hold promise for delivering tobacco smoking cessation support to large numbers of people at low unit cost. Smoke Free is an evidence-informed, widely used app that is highly rated by users. This study aims to assess its effectiveness compared with no support. Two-arm individually randomized controlled effectiveness trial. Online trial with no restrictions on location. English-speaking smokers aged ≥ 18 years willing to make a quit attempt within 4 weeks from initial contact (n = 4990). The primary outcome measure is self-reported 26-week continuous smoking abstinence. Secondary outcome measures include quit attempts in the first 4 weeks post-randomization, 12-week continuous smoking abstinence and 26-week continuous smoking abstinence among those who made a quit attempt. If it is effective, the Smoke Free smartphone app is an affordable and widely implementable intervention to help smokers to quit.

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