Guimond 2017.

Study characteristics
Methods	Study design: longitudinal cohort Country: Canada Data collection period: not stated Registry ID: N/A (cohort)
Participants	Number of participants: N = 110; Number included in meta‐analysis: N = 110 Sample characteristics (at baseline): Age (mean): quitters 53.1 years (SD 10), non‐quitters 55.4 years (SD 10.3); Sex (% male): quitters 36.4% (20/55), non‐quitters: 67.3% (37/55) Population category: postoperative; Specific population: people with confirmed diagnosis of non‐metastatic cancer scheduled to receive surgery with curative intent Nicotine dependence: not measured; Baseline cigarettes per day: quitters: 16.8 (SD 7.9), non‐quitters: 16.5 (SD 10.0); Motivation to quit: not selected by motivation to quit
Interventions	Behavioural support for smoking cessation: no behavioural support Pharmacological support for smoking cessation: no pharmacological support Psychotherapeutic or psychoactive support for mental health or mood: did not receive mood management
Outcomes	Definition of cessation used: smoking cessation was defined as a participant who reported an occasional or a daily usage at one time point and a non‐usage at the following time point Cessation definition used for outcome(s) in this analysis: unclear point‐prevalence Measure of biovalidation: not bioverified Definition of people who continued to smoke used: smoking relapse was defined as a participant who reported smoking cessation at a specific time point and resumed tobacco usage on an occasional or daily basis 4 months later Time point(s) at which follow‐up was conducted: 4 months Outcome category: Anxiety, Depression Outcome measure(s): Hospital Anxiety and Depression Scale (HADS; anxiety and depression sub‐scales)
Funding source	Study was supported by master and doctoral research training scholarships from the Fonds pour la recherche en santédu Québec and a scholarship from the Psychosocial Oncology ResearchTraining program of the Canadian Institutes of Health Research and a grant from the CanadianInstitutes of Health Research (MOP‐69073)
Author conflicts of interest	The authors declare that they have no conflict of interest
Notes	Outcome data source: Unpublished data