Contraceptive use at time of conception for pregnancies resulting in unwanted births.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003267:Contraception / Q000379:methods; D004493:Education; D005193:Family Planning Services; D005260:Female; D006801:Humans; D011247:Pregnancy; D011275:Pregnancy, Unwanted; D012959:Socioeconomic Factors