Table 1.

Search strategy and keywords used to identify studies investigating the relationship between cannabis use in pregnancy and effects on the fetus, newborn and on later childhood

	Keywords	Lookup number	Number of studies found from database 1	Database search results 2	Database search results 3
Pregnancy	Pregnancy OR pregnant women	#1	1000156	220925	1082
Cannabis use	Cannabis OR marijuana	#2	33768	8905	641
Effects on the fetus, the newborn and on later childhood	Fetal outcomes AND neonatal outcomes	#3	13208	15025	391
Combination	#1 AND #2 AND #3	#4	42	34	7