中国西南部重庆市男男性行为者群体性行为参与的相关因素。
Correlates of group sex participation among men who have sex with men in Chongqing, Southwestern China.
机构信息
Department of Medical Records and Statistics, the People's Hospital of Tongliang District, Chongqing, China.
Department of Preventive Medicine, North Sichuan Medical College, Nanchong, China.
出版信息
BMC Public Health. 2021 Mar 22;21(1):561. doi: 10.1186/s12889-021-10607-0.
BACKGROUND
Findings from specific countries indicated group sex was common among men who have sex with men (MSM), and men who reported group sex participation were at increased risk of human immunodeficiency virus (HIV)/sexually transmitted infections (STIs). The purpose of the current analysis was to describe the prevalence and correlates of group sex participation among a community-based sample of MSM in Chongqing, southwestern China.
METHODS
Convenience sampling method was used to recruit participants and data were collected through an anonymous questionnaire. Logistic regression analysis was employed to identify correlates of group sex participation.
RESULTS
Overall, 1151 eligible participants were enrolled in the study. 14.7% of MSM reported participating in group sex in their lifetime, and 5.8% reported group sex participation in the prior 6 months. Factors positively associated with group sex participation in both the prior 6 months and the lifetime included: monthly income ≥3000 Yuan (adjusted odds ratios [aOR] = 3.67, 95% confidence interval [CI] 1.25-10.75; aOR = 2.30, 95% CI 1.21-4.35), initiating anal sex before 18 years old (aOR = 1.86, 95% CI 1.03-3.34; aOR = 2.00, 95% CI 1.31-3.05), using gay apps to seek sex partners (aOR = 7.41, 95% CI 2.57-21.33; aOR = 9.75, 95% CI 4.92-19.33), recreational drug use (aOR = 10.10, 95% CI 5.52-18.49; aOR = 4.75, 95% CI 3.20-7.05) and having condomless internal ejaculation (CIE) (aOR = 3.66, 95% CI 2.01-6.68; aOR = 1.61, 95% CI 1.11-2.35). Factors only associated with group sex participation in the lifetime were older age (age between 26 and 35 years old: aOR = 2.06, 95% CI 1.30-3.26; age > 35 years old: aOR = 1.95, 95% CI 1.10-3.46) and history of STIs (aOR = 2.51, 95% CI 1.37-4.62).
CONCLUSIONS
The results of this study suggested that group sex participation was a potentially risky context for acquisition and transmission of HIV/STIs. Close attention should be given to MSM who participated in group sex, and appropriate risk reduction interventions should be developed specific to this subgroup of MSM.
背景
特定国家的研究结果表明，男男性行为者（MSM）中群体性行为很常见，而且报告有群体性行为的男性感染人类免疫缺陷病毒（HIV）/性传播感染（STI）的风险增加。本分析的目的是描述中国西南部重庆市基于社区的 MSM 群体中群体性行为的流行情况和相关因素。
方法
采用便利抽样方法招募参与者，并通过匿名问卷收集数据。采用逻辑回归分析确定群体性行为参与的相关因素。
结果
共有 1151 名符合条件的参与者纳入研究。14.7%的 MSM 报告一生中曾有过群体性行为，5.8%的人报告在过去 6 个月中有过群体性行为。在过去 6 个月和一生中与群体性行为参与呈正相关的因素包括：月收入≥3000 元（调整后的优势比[aOR] = 3.67，95%置信区间[CI] 1.25-10.75；aOR = 2.30，95%CI 1.21-4.35）、18 岁前开始肛交（aOR = 1.86，95%CI 1.03-3.34；aOR = 2.00，95%CI 1.31-3.05）、使用同性恋应用程序寻找性伴侣（aOR = 7.41，95%CI 2.57-21.33；aOR = 9.75，95%CI 4.92-19.33）、 recreational drug use（aOR = 10.10，95%CI 5.52-18.49；aOR = 4.75，95%CI 3.20-7.05）和无保护内射（CIE）（aOR = 3.66，95%CI 2.01-6.68；aOR = 1.61，95%CI 1.11-2.35）。仅与一生中群体性行为相关的因素包括年龄较大（26-35 岁：aOR = 2.06，95%CI 1.30-3.26；年龄>35 岁：aOR = 1.95，95%CI 1.10-3.46）和性传播感染史（aOR = 2.51，95%CI 1.37-4.62）。
结论
这项研究的结果表明，群体性行为是 HIV/性传播感染获得和传播的一个潜在高风险环境。应密切关注有群体性行为的男男性行为者，并针对这一亚组男男性行为者制定适当的减少风险干预措施。
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