Maughan-Brown Brendan
University of Cape Town, Cape Town, South Africa.
Sex Health. 2013 Jul;10(3):246-52. doi: 10.1071/SH12148.
The current debate about the role of concurrent sexual partnerships in the spread of HIV is influenced by limited or weak empirical data on concurrency. There is still uncertainty about the most basic statistics and little is known about how concurrency is changing.
Longitudinal data (n=2958) with repeated concurrency measures were employed to examine the prevalence of individual concurrency (someone has other partners during their most recent sexual partnership) and perceived partner concurrency (someone perceives his or her partner to have other partners) by population group and gender in 2005 and 2009. Individual fixed-effects logit regression models were created to examine factors associated with changes in individual concurrency among Black men and women.
The prevalence of individual concurrency increased among Black men who reported having had sex (from 33% in 2005 to 39% in 2009), remained constant among Black women (14%), decreased among Coloured (mixed-race) men (from 16% to 8%) and remained low among Coloured women (2% in 2005 and 1% in 2009). Overall, a small decrease in perceived partner concurrency was observed. Changes in individual concurrency were positively associated with changes in perceived partner concurrency among men and women. Among Black women, decreases in household income and finding employment increased the odds of reporting a positive change in individual concurrency.
Race and gender differences in concurrency should be taken into account in future research and HIV prevention initiatives. High and increasing levels of concurrency within most recent partnerships among Black men highlight this group as a potential focus for such efforts.
当前关于同时存在多个性伴侣在艾滋病病毒传播中作用的争论，受到关于同时存在多个性伴侣的实证数据有限或薄弱的影响。关于最基本的统计数据仍存在不确定性，而且对于同时存在多个性伴侣的情况如何变化知之甚少。
采用具有重复同时存在多个性伴侣测量值的纵向数据（n = 2958），以按人群组和性别检查2005年和2009年个人同时存在多个性伴侣（某人在其最近一次性伴侣关系期间有其他伴侣）和感知到的伴侣同时存在多个性伴侣（某人认为其伴侣有其他伴侣）的流行情况。创建个体固定效应逻辑回归模型，以检查与黑人男性和女性中个人同时存在多个性伴侣变化相关的因素。
报告有过性行为的黑人男性中个人同时存在多个性伴侣的流行率有所上升（从2005年的33%升至2009年的39%），黑人女性中保持不变（14%），混血男性中有所下降（从16%降至8%），混血女性中一直较低（2005年为2%，2009年为1%）。总体而言，观察到感知到的伴侣同时存在多个性伴侣略有下降。男性和女性中，个人同时存在多个性伴侣的变化与感知到的伴侣同时存在多个性伴侣的变化呈正相关。在黑人女性中，家庭收入减少和找到工作增加了报告个人同时存在多个性伴侣有正向变化的几率。
未来的研究和艾滋病病毒预防举措应考虑到同时存在多个性伴侣方面的种族和性别差异。黑人男性最近一次性伴侣关系中同时存在多个性伴侣的水平较高且不断上升，凸显出该群体是此类工作的一个潜在重点。
