Population Research Center, University of Texas at Austin, 305 E. 23rd Street, RLP 2.602, Mail Stop G1800, Austin, TX, 78712-1699, USA.
Department of Sociology, University of Texas at Austin, 305 E. 23rd Street, A1700, RLP 3.306, Austin, TX, 78712-1086, USA.
Demography. 2019 Apr;56(2):549-572. doi: 10.1007/s13524-019-00762-w.
Leveraging 2.5 years of weekly data from the Relationship Dynamics and Social Life Study, we investigate the relationship between young women's sexual concurrency and their contraceptive behavior. Specifically, we (1) examine whether young women changed their contraceptive use when switching from one to multiple concurrent sexual partners in the same week; (2) explore the uniformity of contraceptive responses to concurrency across relationship context; and (3) compare the contraceptive behaviors of never-concurrent women with those of ever-concurrent women in weeks when they were not concurrent. Nearly one in five sexually active young women had sex with two or more people in the same week. When they were concurrent, these women's odds of using any contraception increased threefold, and their odds of using condoms increased fourfold. This pattern of contraceptive adjustments was the same across relationship characteristics, such as duration and exclusivity. Yet when they were not concurrent, ever-concurrent women were less likely to use any contraception and used condoms less consistently than women who were never concurrent. We discuss these findings in the context of ongoing debates about the role of sexual concurrency in STI transmission dynamics.
利用关系动态和社会生活研究（Relationship Dynamics and Social Life Study）长达 2.5 年的每周数据，我们调查了年轻女性性行为的同时性与避孕行为之间的关系。具体而言，我们（1）检验了当年轻女性在同一周内从与一个性伴侣发生性关系转变为与多个性伴侣发生性关系时，是否改变了避孕措施；（2）探讨了在不同的关系背景下，对同时性的避孕反应是否一致；（3）比较了在不同周内非同时性和曾经同时性的女性的避孕行为。近五分之一有性行为的年轻女性在同一周内与两人或更多人发生过性关系。当她们同时与多人发生性关系时，她们使用任何避孕措施的几率增加了两倍，使用避孕套的几率增加了四倍。这种避孕措施的调整模式在关系特征（如持续时间和排他性）方面是一致的。然而，当她们没有同时与多人发生性关系时，曾经同时与多人发生性关系的女性使用任何避孕措施的几率较低，使用避孕套的频率也低于从未同时与多人发生性关系的女性。我们在关于性行为的同时性在性传播感染（STI）传播动态中的作用的持续争论背景下讨论了这些发现。
