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as noted earlier, the percentage of premaritally sexually active teen women who ever experienced a premarital first pregnancy rose in all contraceptive use statuses. the largest increase was among never users, but increases also occurred among those who always used contraception. the authors attribute this increase in pregnancy, particularly among the youngest teens, to sharply increased frequency of intercourse and to decreased reliance on the most effective methods of contraception (koenig and zelnik, 1982).


the first point at which interventions might occur would be at the initiation of sexual activity (youth risk behavior surveillance system [yrbss], 1987). this study finds, for example, that in 1983, among black and white teens, initiation of sexual activity was highest for white teens (39 percent), followed by blacks (34 percent), followed by hispanics (27 percent). nearly all (99 percent) of these teens had initiated sexual activity by age 14. for every year in age, white teens were 3.7 times more likely to initiate sexual activity than black teens, and hispanic teens were 1.6 times more likely to initiate sexual activity than black teens. of the teens who initiated sexual activity, nearly 40 percent of white teens, 37 percent of black teens, and 45 percent of hispanic teens had first intercourse before age 15 (youth risk behavior surveillance system [yrbss], 1987). one-quarter of black and hispanic teens and one-tenth of white teens had initiated sexual activity by age 14, but had not had sexual intercourse by age 15. by age 14, nearly one-quarter of black and hispanic teens had had sexual intercourse and one-fifth of these had had intercourse by age 16. 84d34552a1