Sun Jiajun, She Bingyang, Latt Phyu M, Ong Jason J, Xu Xianglong, Bao Yining, Fairley Christopher K, Zhang Lin, Tang Weiming, Zhang Lei
Melbourne Sexual Health Centre, Alfred Health, Melbourne, Vic, Australia; and School of Translational Medicine, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Vic, Australia.
China-Australia Joint Research Centre for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi 710061, China.
Sex Health. 2024 Dec;21. doi: 10.1071/SH24173.
Background Sexualised drug use (SDU) is common in men who have sex with men (MSM). Chemsex, a form of psychoactive SDU, is a strong risk factor for sexually transmitted infections (STIs). We investigated the associations of SDU and chemsex with the sexual behaviours in Chinese MSM. Methods From 23 March 2022 to 22 April 2022, we recruited participants (male, >18 years old) via WeChat across five Chinese cities to an online cross-sectional survey on sexual behaviour preferences, pre-exposure prophylaxis, SDU, and chemsex. One-way ANOVA and chi-squared tests were used to compare sexual behaviour patterns across the groups. Results We included the responses from 796 eligible participants, who were aged 18-70 years, and mostly single. Three groups of participants were identified, the largest was the 'non-SDU group' (71.7%), followed by the 'SDU without chemsex' group (19.7%), and the 'chemsex' group (8.5%). Poppers (8.4%) were the most used drugs in the 'chemsex' group. The 'chemsex' group also had the highest number of sexual partners, and reported the highest frequency of self-masturbation (38.2%). The'chemsex' group also exhibited the highest Shannon diversity index value of 2.32 (P =0.03), indicating a greater diversity of sexual acts. For sequential sex act pairs, the 'chemsex' group was more likely to self-masturbate than perform receptive oral sex, perform receptive oral sex than self-masturbate, being masturbated or perform receptive oral sex than being rimmed by another man. Conclusion Our findings identify the urgent need for targeted HIV/STI interventions for MSM who practice chemsex.
在男男性行为者（MSM）中，性化药物使用（SDU）很常见。化学性行为作为SDU的一种形式，是性传播感染（STIs）的一个重要危险因素。我们调查了中国MSM中SDU和化学性行为与性行为之间的关联。方法：2022年3月23日至2022年4月22日，我们通过微信在中国五个城市招募参与者（男性，年龄>18岁），进行一项关于性行为偏好、暴露前预防、SDU和化学性行为的在线横断面调查。采用单因素方差分析和卡方检验比较各组的性行为模式。结果：我们纳入了796名符合条件的参与者的回复，他们年龄在18至70岁之间，大多为单身。确定了三组参与者，最大的一组是“非SDU组”（71.7%），其次是“无化学性行为的SDU组”（19.7%），以及“化学性行为组”（8.5%）。在“化学性行为组”中，Poppers（8.4%）是使用最多的药物。“化学性行为组”的性伴侣数量也最多，且自我手淫频率最高（38.2%）。“化学性行为组”的香农多样性指数值也最高，为2.3（P =0.03），表明性行为种类更多。对于连续性行为对，“化学性行为组”比进行接受口交更有可能自我手淫，进行接受口交比自我手淫更有可能，被他人手淫或进行接受口交比被另一名男性舔肛更有可能。结论：我们的研究结果表明，迫切需要针对进行化学性行为的MSM开展有针对性的艾滋病毒/性传播感染干预措施。
