Mansergh Gordon, Marks Gary, Colfax Grant N, Guzman Robert, Rader Melissa, Buchbinder Susan
Division of HIV/AIDS Prevention, US Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Mailstop E-45, Atlanta, GA 30333, USA.
AIDS. 2002 Mar 8;16(4):653-9. doi: 10.1097/00002030-200203080-00018.
To assess the prevalence of and factors associated with "Barebacking" as a sociocultural phenomenon in a sample of HIV-positive and -negative men who have sex with men (MSM), and to assess the reasons for barebacking and venues for meeting partners.
A cross-sectional survey of MSM recruited in the San Francisco Bay Area from July 2000 to February 2001.
Barebacking, defined as "intentional anal sex without a condom with someone other than a primary partner", was assessed among men who had heard of the term. Participants were recruited outside multiple venues and interviewed later at community locations. Chi-square and multivariate logistic regression were used for analysis.
The sample (n = 554) of MSM were African-American (28%), Latino (27%), white (31%) and other race/ethnicity (14%); 35% reported being HIV-positive. Seventy per cent of the men had heard of barebacking. Among men aware of the term, 14% had barebacked in the past 2 years (22% of HIV-positive versus 10% of HIV-negative men, P < 0.001); 10% of the full sample did so. The prevalence of barebacking did not differ by race/ethnicity or sexual orientation identification. Men tended to report bareback partners who had the same HIV serostatus; however, a sizeable proportion of men had partners of different or unknown serostatus. Increased physical stimulation and emotional connectedness were the primary reasons for barebacking.
New approaches are needed to reduce bareback behavior and the risk of HIV transmission, including innovative health-promoting behavioral and biomedical interventions.
评估在男男性行为者（MSM）样本中，“无保护肛交”作为一种社会文化现象的流行情况及其相关因素，并评估无保护肛交的原因和寻找性伴的场所。
对2000年7月至2001年2月在旧金山湾区招募的男男性行为者进行横断面调查。
在听说过“无保护肛交”这一术语的男性中评估无保护肛交，其定义为“与主要性伴以外的人故意进行无保护肛交”。在多个场所外招募参与者，随后在社区地点进行访谈。采用卡方检验和多因素逻辑回归进行分析。
男男性行为者样本（n = 554）中，非裔美国人占28%，拉丁裔占27%，白人占31%，其他种族/族裔占14%；35%报告感染了艾滋病毒。70%的男性听说过无保护肛交。在知晓该术语的男性中，14%在过去2年中有过无保护肛交行为（艾滋病毒阳性男性中为22%，艾滋病毒阴性男性中为10%，P < 0.001）；整个样本中有10%这样做过。无保护肛交的流行率在种族/族裔或性取向认同方面没有差异。男性倾向于报告与自己艾滋病毒血清学状态相同的无保护肛交性伴；然而，相当一部分男性有无保护肛交性伴的血清学状态不同或未知。增加身体刺激和情感联系是无保护肛交的主要原因。
需要新的方法来减少无保护肛交行为和艾滋病毒传播风险，包括创新的促进健康的行为和生物医学干预措施。
