Exploring the diversity of sexual acts in Chinese men who have sex with men and its impacts on the risk of HIV and sexually transmitted infections

IF 3.9 3区医学 Q1 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH Public Health Pub Date : 2024-11-27 DOI:10.1016/j.puhe.2024.11.011

Yi Liu , Bingyang She , Rui Zhao , Gaixia Li , Yawu Hu , Fang Lu , Shu Su , Lei Zhang

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Abstract

Objectives

High-risk sexual behaviour contributes to sexually transmitted infections (STIs), but the diversity of sexual acts in men who have sex with men (MSM) was understudied. We aimed to identify the diversity of sexual acts in Chinese MSM and its impacts on HIV/STI risk.

Study design

Cross-sectional study.

Methods

Between January and September 2022, the study was conducted in Xi'an, China, to identify sexual acts performed during the last sexual episode, which was measured by the Shannon diversity index.

Results

Of the 931 MSM, 2.9 % tested positive for HIV, 5.7 % for syphilis, 13.6 % for gonorrhoea and 12.9 % for chlamydia. The Shannon diversity index for individual sexual acts was 1.609 (IQR 0.693–1.946), whereas the index for sexual act pairs was 1.386 (IQR 0–1.792). MSM infected with gonorrhoea exhibited significantly greater diversity in individual sexual acts (1.792 vs. 1.609) and sexual act pairs (1.609 vs. 1.386) than otherwise. Compared with MSM having one partner over the past 3 months, MSM with 2–5 partners was 69.7 % more diverse in individual sexual acts (aOR = 1.697, 1.489–1.935) and 59.4 % more diverse in sexual act pairs (aOR = 1.594, 1.401–1.811). For MSM with >5 partners, the corresponding percentages were 84.8 % (aOR = 1.848, 1.624–2.104) and 56.2 % (aOR = 1.562, 1.368–1.782). Compared with those who did not use saliva as a lubricant, MSM who did were less diverse in individual sexual acts (aOR = 0.763, 0.662–0.878) and sexual act pairs (aOR = 0.752, 0.654–0.866).

Conclusion

MSM infected with gonorrhoea and those with multiple sexual partners are more diverse in sexual acts during sexual episodes.

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探索中国男男性行为的多样性及其对艾滋病和性传播感染风险的影响

目的高危性行为是性传播感染（STI）的诱因，但对男男性行为者（MSM）性行为的多样性研究不足。我们旨在确定中国男男性行为者性行为的多样性及其对 HIV/STI 风险的影响。研究设计横断面研究方法 2022 年 1 月至 9 月期间，我们在中国西安进行了一项研究，以确定在最后一次性行为中发生的性行为，并用香农多样性指数进行测量。结果在 931 名男男性行为者中，2.9% 的人 HIV 检测呈阳性，5.7% 的人梅毒检测呈阳性，13.6% 的人淋病检测呈阳性，12.9% 的人衣原体检测呈阳性。单个性行为的香农多样性指数为 1.609（IQR 0.693-1.946），而成对性行为的指数为 1.386（IQR 0-1.792）。感染淋病的 MSM 在单个性行为（1.792 对 1.609）和成对性行为（1.609 对 1.386）方面的多样性明显高于其他情况。与过去 3 个月只有一个性伴侣的 MSM 相比，有 2-5 个性伴侣的 MSM 在单个性行为中的多样性要高出 69.7%（aOR = 1.697，1.489-1.935），在成对性行为中的多样性要高出 59.4%（aOR = 1.594，1.401-1.811）。在有 5 个性伴侣的 MSM 中，相应的百分比分别为 84.8%（aOR = 1.848，1.624-2.104）和 56.2%（aOR = 1.562，1.368-1.782）。与不使用唾液作为润滑剂的 MSM 相比，使用唾液作为润滑剂的 MSM 在单个性行为（aOR = 0.763，0.662-0.878）和成对性行为（aOR = 0.752，0.654-0.866）中的多样性较低。

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来源期刊

Public Health 医学-公共卫生、环境卫生与职业卫生

CiteScore

7.60

自引率

0.00%

发文量

280

审稿时长

37 days

期刊介绍： Public Health is an international, multidisciplinary peer-reviewed journal. It publishes original papers, reviews and short reports on all aspects of the science, philosophy, and practice of public health.