成都市683名男男性行为者中涉药性行为亚群的特征及相关因素

Prevalence of chemsex and associated factors among men who have sex with men

目的 了解MSM中涉药性行为亚群的特征及其相关因素。方法 采用现场问卷调查方式收集成都市部分MSM的基本情况、性行为学特征、是否有涉药性行为(chemsex)经历等变量。采用单因素分析及多因素分析探索涉药性行为亚群的特征及相关因素。结果 本研究共纳入683名MSM,平均年龄为(29.15±7.41)岁。调查对象中44.95%(307例)有涉药性行为经历,近6个月性伴数大于1的比例为48.32%,67.79%的调查对象近6个月主要通过网络寻找性伴。多因素分析结果显示,首次男男性行为年龄<18岁(OR=1.74,95%CI:1.17~2.60),近6个月性伴数大于1(OR=2.13,95%CI:1.50~3.05),近6个月有通过网络寻找性伴侣(OR=1.62,95%CI:1.10~2.39),近6个月有HIV阳性或状态不确定的男伴(OR=1.80,95%CI:1.24~2.60),近6个月有接触涉药性行为正向信息(OR=2.04,95%CI:1.41~2.94),近6个月有收到涉药性行为邀请、精神活性物质或毒品销售渠道等信息(OR=1.68,95%CI:1.18~2.39)与发生涉药性行为呈正相关关系。结论 多性伴、不关注性伴是否感染HIV与涉药性行为亚群高度相关;过早发生性行为、网络交友,以及网络各种推广信息会促使涉药性行为发生,应该对青少年加强宣传性相关知识及健康教育,并对网络信息及各种应用软件加强监管。

Objective To understand the characteristics and related factors of drug-related sexual behavior(chemsex) among MSM. Methods A questionnaire survey was conducted to collect the basic information, sexual behavior characteristics and chemsex experience among MSM in Chengdu. Univariate analysis and multivariate analysis were used to explore the characteristics and related factors of drug-related sexual behaviors. Results A total of 683 MSM with a mean age of(29.15±7.41) years were included in this study. 44.95%(307) of the respondents had drug-related sexual behavior experience, 48.32% had more than 1 sexual partner in the past 6 months and 67.79% of the respondents sought sexual partners through the internet in the past 6 months. Multivariate analysis showed that factors related to chemsex included age at first sex with men being <18 years(OR=1.74, 95%CI:1.17-2.60), more than 1 sexual partner in the past 6 months(OR=2.13, 95%CI: 1.50-3.05), sexual partners being sought through the internet in the past 6 months(OR=1.62, 95%CI: 1.10-2.39), having male partners with HIV-positive or uncertain status in the past 6 months(OR=1.80,95%CI: 1.24-2.60), having positive information on contact with drug-related sexual behavior in the past 6 months(OR=2.04, 95%CI: 1.41-2.94), receiving information on invitation to drug-related sexual behavior, psychoactive substances abuse, or drug sales channels in the past 6 months(OR=1.68, 95%CI: 1.18-2.39). Conclusions Multiple sexual partners and non-concerned sexual partners’ HIV status are considered to be highly associated with chemsex. Having experiences of sexual intercourse at young age, online dating, and receiving various online sexual promotion information are considered to promote drug-related sexual behaviors. Publicity related knowledge and health education should be strengthened for adolescents. Information surveillance to online media and various application software should be strengthened.