男同性恋者中避孕套的估计失败率及使用频率。
Estimated condom failure and frequency of condom use among gay men.
作者信息
Thompson J L, Yager T J, Martin J L
机构信息
School of Public Health, Division of Sociomedical Sciences, Columbia University, New York, NY.
出版信息
Am J Public Health. 1993 Oct;83(10):1409-13. doi: 10.2105/ajph.83.10.1409.
OBJECTIVES
Condoms are designed to bar transmission of the human immunodeficiency virus (HIV), but they sometimes fail. This paper explores the effect of experience with condoms on condom failure among gay men.
METHODS
Risk of condom failure (breakage or slippage) on a single occasion is estimated for four sexual acts reported over 12 months by a sample of gay New York City men (n = 741). The estimation procedure assumes that each episode in which a condom is used is an independent event. Evidence is offered to support this assumption.
RESULTS
Risk of condom failure in a single episode was fairly high, particularly in anal intercourse, for men who had engaged in each act only a few times in the previous year. It declined rapidly with experience (e.g., to below 1% for receptive anal intercourse after about 10 episodes in the previous year). Condoms failed less often in oral than anal sex, but estimated risk of failure also decreased with experience.
CONCLUSIONS
Gay men should be especially cautious the first few times they use a condom; after moderate experience, however, they may expect a low risk of condom failure.
目的
避孕套旨在阻止人类免疫缺陷病毒（HIV）的传播，但有时会失效。本文探讨了使用避孕套的经验对男同性恋者中避孕套失效的影响。
方法
对纽约市男同性恋者样本（n = 741）在12个月内报告的四种性行为中单次使用避孕套失败（破裂或滑落）的风险进行了估计。估计程序假定每次使用避孕套的情况都是独立事件。提供了证据来支持这一假设。
结果
对于前一年每种行为只进行过几次的男性，单次使用避孕套失败的风险相当高，尤其是在肛交中。随着经验的增加，风险迅速下降（例如，在前一年约10次性行为后，接受肛交的失败风险降至1%以下）。口交中避孕套失效的频率低于肛交，但估计的失败风险也随着经验的增加而降低。
结论
男同性恋者在首次使用避孕套时应格外谨慎；然而，在有一定经验后，他们可能预期避孕套失败的风险较低。
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