title: Aggregate and lifetime contraceptive failure in the United States.
authors: Office of Population Research, Princeton University.
authors: J
authors: J
authors: Trussell
authors: B
authors: B
authors: Vaughan
mesh_terms: D000027:Abortion, Incomplete / Q000453:epidemiology; D000029:Abortion, Legal / Q000706:statistics & numerical data; D000293:Adolescent; D000328:Adult; D003267:Contraception / Q000379:methods / Q000639:trends*; D005260:Female; D005298:Fertility; D006801:Humans; D015233:Models, Statistical; D010349:Patient Compliance; D011247:Pregnancy; D011275:Pregnancy, Unwanted / Q000706:statistics & numerical data*; D044469:Racial Groups; D014481:United States