Cavazos-Rehg Patricia A, Krauss Melissa J, Spitznagel Edward L, Schootman Mario, Bucholz Kathleen K, Peipert Jeffrey F, Sanders-Thompson Vetta, Cottler Linda B, Bierut Laura Jean
Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA.
Contraception. 2009 Aug;80(2):158-62. doi: 10.1016/j.contraception.2009.02.014. Epub 2009 Apr 23.
This study examined gender and racial/ethnic differences in sexual debut.
We analyzed 1999-2007 data from the Youth Risk Behavior Surveillance System (YRBSS), a cross-sectional, nationally representative survey of students in Grades 9-12 established by the Centers for Disease Control and Prevention. The Kaplan-Meier method was used to compute the probability of survival (not having become sexually active) at each year (age 12 through 17), and separate estimates were produced for each level of gender and racial/ethnic group.
African-American males experienced sexual debut earlier than all other groups (all tests of significance at p<.001) and Asian males and females experienced sexual debut later than all groups (all tests of significance at p<.001). By their 17th birthday, the probability for sexual debut was less than 35% for Asians (females 28%, males 33%) and less than 60% for Caucasians (58% females, 53% males) and Hispanic females (59%). The probability for sexual debut by their 17th birthday was greatest for African Americans (74% females, 82% males) and Hispanic males (69%).
These results demonstrate a need for sexual education programs and policy to be sensitive to the roles of race and ethnicity in sexual debut.
本研究调查了首次性行为在性别和种族/族裔方面的差异。
我们分析了青少年风险行为监测系统（YRBSS）1999 - 2007年的数据，这是一项由疾病控制与预防中心开展的针对9至12年级学生的横断面全国代表性调查。采用Kaplan - Meier方法计算每年（12岁至17岁）的生存概率（未开始性行为），并针对每个性别和种族/族裔群体水平分别进行估计。
非裔美国男性比所有其他群体更早经历首次性行为（所有显著性检验p <.001），而亚裔男性和女性比所有群体更晚经历首次性行为（所有显著性检验p <.001）。到17岁生日时，亚裔首次性行为的概率低于35%（女性为28%，男性为33%），白种人（女性为58%，男性为53%）和西班牙裔女性（59%）低于60%。到17岁生日时，非裔美国人（女性为74%，男性为82%）和西班牙裔男性（69%）首次性行为的概率最高。
这些结果表明性教育项目和政策需要对种族和族裔在首次性行为中的作用保持敏感。
