Harper Christopher R, Dittus Patricia J, Leichliter Jami S, Aral Sevgi O
From the Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, GA.
Sex Transm Dis. 2017 Feb;44(2):96-100. doi: 10.1097/OLQ.0000000000000554.
The purpose of the current analysis is to examine subgroup differences in the distribution of opposite-sex sex partners in the United States across an approximate 10-year period to identify patterns that may inform sexually transmitted infection research and prevention.
Data were drawn from the 2002 and 2011-2013 National Survey of Family Growth, a US probability-based household survey focusing on sexual and reproductive health. The measures included in this analysis were lifetime opposite-sex sex partners and opposite-sex sex partners in the past year. Analyses were conducted separately for men and women. All analyses were conducted in R and R-studio with the "survey" package, focusing on medians, the 80th, and 95th quartile.
In 2002, there were significant differences between men and women in median number of lifetime sex partners with men reporting more lifetime partners. However, in the 2011-2013 data, these differences are no longer significant. Still, the findings suggest that the top 20% and top 5% of men are reporting significantly more lifetime partners than their female counterparts. In comparison, partners in the past year remain relatively unchanged for both men and women.
These findings suggest that there were important changes in the distribution of sex partners between 2002 and 2011-2013 that have implications for sexually transmitted infection prevention. Median lifetime partners are no longer different for women and men: however, the distribution of lifetime partners among men is becoming even more skewed.
本次分析的目的是研究美国在大约10年时间里异性性伴侣分布的亚组差异，以确定可能为性传播感染研究和预防提供信息的模式。
数据来自2002年以及2011 - 2013年的全国家庭成长调查，这是一项基于概率的美国家庭调查，重点关注性与生殖健康。本次分析纳入的指标包括终生异性性伴侣数量以及过去一年中的异性性伴侣数量。分别对男性和女性进行分析。所有分析均在R和R工作室中使用“调查”软件包进行，重点关注中位数、第80和第95四分位数。
2002年，男性和女性终生性伴侣数量的中位数存在显著差异，男性报告的终生伴侣更多。然而，在2011 - 2013年的数据中，这些差异不再显著。不过，研究结果表明，男性中处于前20%和前5%的人群报告的终生伴侣数量显著多于女性。相比之下，过去一年中男性和女性的性伴侣数量相对保持不变。
这些发现表明，2002年至2011 - 2013年期间性伴侣分布发生了重要变化，这对性传播感染的预防具有影响。男性和女性的终生伴侣中位数不再有差异：然而，男性终生伴侣的分布变得更加不均衡。
