Van't Hof 2000.

Methods	Country: USA Setting: hospital and well baby visits RCT
Participants	Postpartum women with a history of smoking in the 30 days before pregnancy
Interventions	Intervention: Initial nurse delivered relapse prevention counselling for 15 to 30 minutes. At 2‐week and 2‐ and 4‐month well baby visits with the paediatric provider, women received reinforcement if they had not restarted smoking. If they had restarted smoking, they were given encouragement and a plan to try to quit again. Control: received no counselling and "standard care" from the paediatric provider
Outcomes	Follow‐up 6 months from baseline Proportion of mothers who maintain smoking cessation postpartum
Type of intervention	Well‐child (peripartum)
Notes	Had salivary cotinine at baseline only
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No information provided
Allocation concealment (selection bias)	Unclear risk	No information provided
Incomplete outcome data (attrition bias) All outcomes	Low risk
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No information provided