Sexual behaviors and factors influencing condom use among men who have sex with men with HIV negative in Chongqing

Objective To explore sexual behaviors and the factors influencing condom use among human immunodeficiency virus(HIV)- negative men who have sex with men(MSM) in Chongqing. Methods A questionnaire survey was used to collect data in Chongqing from 1 June 2018 to 1 June 2019, including demographic and sexual behavioral information. Univariate and multivariate logistic regression analysis was used to analyze the influencing factors of persistent use of condoms in MSM. Results Among 282 HIV-negative MSM, 66.7% (188/282) were younger than 28 years old, 90.8% (256/282) received higher education, 81.2% (229/282) have had more than one sexual partner, and 40.1% (113/282) have used a condom for every sexual encounter in the past 6 months. Among the 172 MSM who completed all the questions, 62.8% (108/172) were single, 72.1% (124/172) had sex more than once every month, 79.7% (137/172) were homosexual, 76.7% (132/172) have disclosed their sexual orientation. Univariate analysis of our data showed that the number of sexual partners, the frequency of sexual behavior, drug abuse, and a history of HIV post-exposure prophylaxis are factors influencing the use of condoms. Multivariate analysis of data showed that more than one sexual partner and monthly sexual behavior are independent influencing factors for insistence on using condoms in MSM. Conclusion High-risk sexual behaviors are common in HIV- negative MSM in Chongqing, but the rate of consistent condom use was low. MSM should receive appropriate AIDS intervention services and appropriate counselling regarding consistent condom use. 摘要： 目的 探讨重庆市人类免疫缺陷病毒( human immunodeficiency virus , HIV)阴性男男性行为者(men who have sex with men, MSM)性行为特征及安全套使用的影响因素。 方法 通过问卷调查的方式收集 2018 年 6 月 1 日—2019 年 6 月 1 日重庆市 HIV 阴性 MSM 的人口学及性行为特征相关信息，采用单因素和多因素 Logistic 回归分析 MSM 人群坚持 使用安全套的影响因素。 结果 共调查 282 例 HIV 阴性 MSM，其中 66.7%(188/282)年龄≤28 岁，90.8%(256/282)学历为 大专及以上，81.2%(229/282)性伴人数 >1 人，40.1%(113/282)近 6 个月同性肛交性行为时坚持使用安全套；172 例完成 了所有问卷内容的 MSM 中，62.8%(108/172)情感状况为单身，72.1%(124/172)每月都有性行为，79.7%(137/172)为同性 恋，76.7%(132/172)已对外公开性取向。单因素分析结果显示，性伴数量、性行为频率、滥用药物及既往 HIV 暴露后预 防史是坚持使用安全套的影响因素。多因素分析结果显示，性伴数量 >1 人、每月都有性行为是 MSM 坚持使用安全套 的独立危险因素。 结论 重庆市 HIV 阴性 MSM 人群高危性行为较为普遍，但安全套使用情况不容乐观，应针对其性行 为特征进行艾滋病防控知识宣教，采取多种措施提高安全套使用率。