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| Factors affecting pre-exposure prophylaxis use among men who have sex with men |
| LI Xinge, WANG Lijuan, SONG Liang, DING Haifeng, GAO Yanjie
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| Chaoyang District Center for Disease Control and Prevention, Beijing 100020, China |
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Abstract Objective To investigate the factors affecting pre-exposure prophylaxis (PrEP) use among men who have sex with men (MSM), so as to provide a basis for improving PrEP uptake among MSM and optimizing HIV prevention and control strategies. Methods The MSM were recruited at a HIV testing site of the "Danlan Public Welfare" organization in Beijing Municipality using the convenient sampling method from March to May 2024. Sociodemographic information, awareness of basic AIDS knowledge, sexual orientation and behaviors, the use of PrEP and post-exposure prophylaxis (PEP) in the past six months were collected using the questionnaire survey. Multivariable logistic regression model and decision tree model were used to analyze the influencing factors for PrEP use among MSM. Results A total of 414 participants were surveyed, with a mean age of (33.52±8.50) years. Among them, 345 individuals (83.33%) had a college degree and above. The predominant sexual orientation was homosexual, with 265 individuals, accounting for 64.01%. The majority reported having 1 to 2 same-sex partners in the past six months, with 182 individuals (43.96%). A total of 39 individuals (9.42%) had used PEP in the past six months. A total of 68 individuals (16.43%) had used PrEP during the same period. Multivariable logistic regression analysis revealed that educational attainment (college degree and above, OR=28.200, 95%CI: 3.162-251.519), the number of same-sex partners in the past six months (3-5 partners, OR=3.963, 95%CI: 1.065-14.755; ≥6 partners, OR=7.518, 95%CI: 1.829-30.910), and the use of PEP in the past six months (OR=18.606, 95%CI: 7.587-45.631) were significant factors associated with PrEP use among MSM. The decision tree model identified educational level, sexual orientation, and the number of same-sex partners in the past six months as factors affecting PrEP use among MSM. Among these, the number of same-sex partners in the past six months emerged as the primary influencing factor. The use of PrEP was 38.46% among MSM who had ≥3 same-sex partners in the past six months and identified as homosexual or heterosexual. Conclusion The use of PrEP among MSM is primarily associated with educational level, the number of same-sex partners in the past six months, use of post-exposure prophylaxis (PEP) in the past six months, and sexual orientation.
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Received: 18 July 2025
Revised: 24 November 2025
Published: 25 December 2025
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