Table 1.

Search terms

Database	Search terms
Cochrane	[Smoking (MeSH) OR smoking cessation (MeSH)] AND [pregnant women (MeSH) OR prenatal care (MeSH) OR pregnancy (MeSH) OR postpartum period (MeSH)] AND [clinical trial (MeSH) OR intervention studies(MeSH) OR evaluation studies (MeSH)]
Medline	[Smoking (MeSH) OR Smoking cessation (MeSH)] AND [pregnant women (MeSH) OR prenatal care (MeSH) OR pregnancy (MeSH) OR postpartum period (MeSH)] AND [clinical trial (MeSH) OR Intervention studies (MeSH) OR evaluation studies (MeSH)]
PsycInfo	[Tobacco smoking (subject heading) OR smoking cessation (subject heading)] AND [prenatal care (subject heading) OR pregnancy (subject heading) OR postnatal period (subject heading)] AND [clinical trial (subject heading) OR intervention (subject heading) OR evaluation (subject heading)]