Premarital sexual activity among U.S. teenage women over the past three decades.
D000293:Adolescent; D000294:Adolescent Behavior; D001741:Black or African American; D005260:Female; D006801:Humans; D011159:Population Surveillance; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D012494:Sampling Studies; D012725:Sexual Behavior; D014481:United States; D044465:White People