Association between the characteristics of sexual partners and substance use before sexual behavior in young male students who have sex with men

Objective To understand the characteristics of sexual partners and the influence of having multiple sexual partners on substance use among young male students man who have sex with men (MSM) in China, and to provide scientific basis for the prevention and control of HIV/AIDS among young MSM students. Methods A mixed recruitment method of snowball sampling and respondent driven sampling was used to recruit young MSM students in Beijing and Tianjin, and a questionnaire survey was conducted among 220 participants from November to December 2019. Chi-square test and generalized linear model multi-factor Logistic regression were used to analyze the influencing factors of substance use before sexual behavior. Results The average age of them was (22.39±2.57) years old, 84.5% of them were students, the average age of first sexual behavior was (18.83±2.45) years old, 44.1% of them had two or more sexual partners (including fixed sexual partners, temporary sexual partners and commercial sexual partners), 22.7% had more than one male fixed partner. After adjusting for age and education, having multiple sexual partners was risk factor for drinking alcohol before sex ( aOR = 2.97) or substance abuse ( aOR = 2.39). Having male temporary sexual partner was an risk factor in substance use before sexual behavior ( OR = 4.10). Conclusion The characteristics of sexual partners among young MSM students are complex, and the proportion of multiple sexual partners is high. Having fixed single sexual partner can reduce the risk of substance use before sexual behavior. AIDS prevention education for young MSM students should be further strengthened. 【摘要】 目的 了解中国青年学生男男性行为人群 (men who have sex with men, MSM)性伴特征和多性伴现象对性行为 前使用物质行为的影响, 为制定青年学生 MSM 艾滋病防控干预提供科学依据。 方法 2019 年 11一12 月通过受试者推荐 和滚雪球 2 种抽样方法进行抽样, 以北京和天津为中心对 220 名青年 MSM 进行问卷调查, 采用； χ 2 检验和广义线性模型多 因素 Logistic 回归分析性行为前物质使用的影响因素。 结果 研究对象平均年龄 (22.39±2.57) 岁, 84.5% 为在读学生, 首次 性行为年龄为 (18.83±2.45)岁, 44.1%有2 个及以上性伴 (包括固定性伴、临时性伴和商业性伴), 22.7%有多个男性固定性 伴。调整年龄和受教育水平的影响后, 多性伴与性行为前饮酒 (a OR = 2.97)或滥用药物 (a OR = 2.39)呈正相关;有男性临时 性伴与性行为前使用物质呈正相关 ( OR = 4.10)。 结论 青年MSM的性伴特征复杂, 多性伴比例较高, 单一固定性伴可降 低性行为前使用物质行为的风险, 应进一步加强青年学生MSM的预防艾滋病教育。