The antecedents and prevention of unwanted pregnancy.
D000293:Adolescent; D000328:Adult; D001294:Attitude to Health; D003151:Community Health Centers; D003268:Contraception Behavior; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010551:Personality; D011247:Pregnancy; D011275:Pregnancy, Unwanted; D012736:Sex Education; D012725:Sexual Behavior; D014481:United States