Use of conception control methods before pregnancies terminating in birth or a requested abortion in New York City municipal hospitals.
D000028:Abortion, Induced; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003267:Contraception; D036861:Delivery, Obstetric; D005193:Family Planning Services; D005260:Female; D006769:Hospitals, General; D006801:Humans; D009519:New York City; D010067:Ownership; D011247:Pregnancy; D013997:Time Factors