The three R's: residence, religion, and reproduction.
D000293:Adolescent; D000328:Adult; D001290:Attitude; D002410:Catholicism; D002835:Christianity; D005191:Family Characteristics; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006801:Humans; D007585:Jews; D008297:Male; D008875:Middle Aged; D012067:Religion; D012111:Residence Characteristics; D012237:Rhode Island; D012494:Sampling Studies; D012959:Socioeconomic Factors; D014505:Urban Population