The IC-SMOKE project is a Cancer Research UK funded systematic review project of behavioural smoking cessation trials (number C50862/A18446; PROSPERO CRD42015025251; published protocol doi: 10.1186/s13643-016-0253-1). In this folder we will share: a) details and the analysis plan of each individual paper ***before the analyses are being conducted***, as the protocols do not fully specify these. b) data, syntax and outputs for each analysis/article, uploaded upon publication. c) the manuscripts. d) tools developed for this study.