Munafò 2008.

Study characteristics
Methods	Study design: longitudinal cohort Country: UK Data collection period: 1991 ‐ 1995 Registry ID: N/A (cohort)
Participants	Number of participants: N = 7089; Number included in meta‐analysis: N = 991 Sample characteristics (at baseline): Age (mean): at birth 29 years (IQR 26 – 32); Sex (% male): 0% (0/7089) Population category: pregnant population; Specific population: pregnant women Nicotine dependence: not reported; Baseline cigarettes per day: not reported; 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: point prevalence (exact definitions not provided) Cessation definition used for outcome(s) in this analysis: unclear point prevalence Measure of biovalidation: not bioverified Definition of people who continued smoking used: people who temporarily quit or who continued to smoke (exact definitions not provided) Time point(s) at which follow‐up was conducted: assessments of current smoking asked at 6 intervals – 18 weeks and 32 weeks antenatal; 8 weeks, 8, 21 and 33 months postnatal Outcome category: Depression Outcome measure(s): Edinburgh Postnatal Depression Scale (EPDS)
Funding source	The UK Medical Research Council, the Wellcome Trust, and the University of Bristol provided core support for this cohort study
Author conflicts of interest	None specified
Notes	Outcome data source: Published data