Contraceptive failure in the United States: the impact of social, economic and demographic factors.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000367:Age Factors; D002410:Catholicism; D002835:Christianity; D003271:Contraceptive Agents, Female; D003274:Contraceptive Devices, Female; D005260:Female; D006801:Humans; D008393:Marriage; D011247:Pregnancy; D011275:Pregnancy, Unwanted; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D014481:United States; D044465:White People
D003271:Contraceptive Agents, Female