Sexual Initiation, Contraceptive Use, and Pregnancy Among Young Adolescents
Sexual Initiation, Contraceptive Use, and Pregnancy Among Young Adolescents
复制标题
DOI：
10.1542/peds.2012-3495
复制
发表时间：
2013-05-01
期刊：
影响因子：
8
通讯作者：
Philbin, Jesse M.
中科院分区：
文献类型：
--
作者：
Finer, Lawrence B.;Philbin, Jesse M.
目的：为了提出新的数据，在美国青少年的性开始，避孕药具的使用，怀孕年龄在10至19岁，并比较最年轻的青少年的行为与那些年长的adolescents.METHODS：使用全国代表性的数据，从几轮的全国家庭成长调查，我们进行了事件历史（即生存）分析，检查性开始和避孕药具的使用时间。我们计算了青少年怀孕率由一年的年龄使用的数据从国家卫生统计中心，Guttmacher研究所，和美国人口普查局。结果：性活动是，一直是罕见的12岁及以下，大多数是非自愿的。相比之下，大多数年龄较大的青少年（17-19岁）性活跃。大约30%的15至16岁的人有过性行为。最年轻少女的怀孕率极低，例如，12岁少女的怀孕率约为万分之一。15岁以下的女孩的避孕药具使用率与年龄较大的女孩相似，而14岁或更小的女孩在第一次性行为时使用避孕药具的可能性较小，并且需要更长的时间才能开始开始使用避孕药具。性活动和怀孕在最年轻的青少年中是罕见的，他们的行为代表了一个不同的公共卫生问题，而不是更广泛的问题怀孕的年龄较大的青少年。卫生专业人员可以通过认识到青少年之间发生非自愿性行为的可能性更高，并在青少年患者性活跃之前向他们提供避孕方法，来改善青少年的结局。
OBJECTIVE: To present new data on sexual initiation, contraceptive use, and pregnancy among US adolescents aged 10 to 19, and to compare the youngest adolescents' behaviors with those of older adolescents.METHODS: Using nationally representative data from several rounds of the National Survey of Family Growth, we performed event history (ie, survival) analyses to examine timing of sexual initiation and contraceptive use. We calculated adolescent pregnancy rates by single year of age using data from the National Center for Health Statistics, the Guttmacher Institute, and the US Census Bureau.RESULTS: Sexual activity is and has long been rare among those 12 and younger; most is nonconsensual. By contrast, most older teens (aged 17-19) are sexually active. Approximately 30% of those aged 15 to 16 have had sex. Pregnancy rates among the youngest teens are exceedingly low, for example, similar to 1 per 10 000 girls aged 12. Contraceptive uptake among girls as young as 15 is similar to that of their older counterparts, whereas girls who start having sex at 14 or younger are less likely to have used a method at first sex and take longer to begin using contraception.CONCLUSIONS: Sexual activity and pregnancy are rare among the youngest adolescents, whose behavior represents a different public health concern than the broader issue of pregnancies to older teens. Health professionals can improve outcomes for teenagers by recognizing the higher likelihood of nonconsensual sex among younger teens and by teaching and making contraceptive methods available to teen patients before they become sexually active.