Probabilities of intercourse and conception among U.S. teenage women, 1971 and 1976.
One in five U.S. females have had intercourse by age 16, and two-thirds, by age 19. Almost all the experience is premarital. One in 10 U.S. women get pregnant before age 17; one-quarter before they are 19, and eight in 10 of these pregnancies are premarital. More than one-third of those who are sexually active premaritally have a premarital pregnancy before they turn 19, one-quarter by the time they are 17.
D000206:Actuarial Analysis; D000293:Adolescent; D000328:Adult; D001741:Black or African American; D003075:Coitus; D005260:Female; D006801:Humans; D008393:Marriage; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D011336:Probability; D044465:White People