Variability and effectiveness of comparator group interventions in smoking cessation trials: a systematic review and meta-analysis.
Nicola BlackMaarten C EismaWolfgang ViechtbauerMarie JohnstonRobert J WestJamie Hartmann-BoyceSusan MichieMarijn de BruinPublished in: Addiction (Abingdon, England) (2020)
Interventions delivered to comparator groups in smoking cessation randomized controlled trials vary considerably in content, and cessation rates are strongly predicted by stop-smoking medication and number of behavior change techniques delivered.