Lau Joseph T F, Mo Phoenix K H, Gu Jing, Hao Chun, Lai CoCo H Y
Centre for Health Behaviours Research, Faculty of Medicine, The School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong.
The Chinese University of Hong Kong Shenzhen Research Institute, Shatin, Hong Kong.
AIDS Educ Prev. 2016 Feb;28(1):26-42. doi: 10.1521/aeap.2016.28.1.26.
This study investigates event-specific factors that differentiate the last episodes of unprotected anal intercourse (UAI) from protected anal intercourse (PAI) with regular partner (RP) among 213 men who have sex with men (MSM) who did not use condoms consistently using case-crossover analysis. Factors positively associated with the last episode of UAI with RP included: two situational factors (i.e., participant's suggestion to have UAI, alcohol use) and three environmental/setting factors (i.e., sex took place overseas, during a weekday and not at home). Negative associations with an episode of UAI with RP included: five situational factors (i.e., discussion about condom use prior to sex, RP's suggestion to have PAI, participant's suggestion to have PAI, perception that RP would like to use a condom, participant's planning to use a condom) and two environmental/setting factors (i.e., condoms placed at the venue where sex took place, partner possessed a condom). Thus, these significant event-specific factors explained under which circumstances some MSM would use and would not use condoms during anal sex with RP.
本研究采用病例交叉分析方法，调查了213名未始终坚持使用避孕套的男男性行为者（MSM）中，导致与固定性伴（RP）进行最后一次无保护肛交（UAI）与有保护肛交（PAI）不同的特定事件因素。与与RP进行最后一次UAI呈正相关的因素包括：两个情境因素（即参与者提出进行UAI的建议、饮酒）和三个环境/场所因素（即性行为发生在国外、工作日且不在家中）。与与RP进行UAI的某一事件呈负相关的因素包括：五个情境因素（即性行为前关于使用避孕套的讨论、RP提出进行PAI的建议、参与者提出进行PAI的建议、认为RP愿意使用避孕套、参与者计划使用避孕套）和两个环境/场所因素（即性行为发生场所放置了避孕套、性伴持有避孕套）。因此，这些显著的特定事件因素解释了在哪些情况下，一些MSM在与RP进行肛交时会使用或不使用避孕套。
