Evans B A, Bond R A, MacRae K D
Department of Genitourinary Medicine, Charing Cross Hospital, London, UK.
Int J STD AIDS. 1998 Mar;9(3):129-33. doi: 10.1258/0956462981921873.
Our study of men presenting at a genitourinary medicine clinic shows that self-classification into homosexual or bisexual does not accurately define behaviour. We found that 8.5% of self-defined homosexual men had had heterosexual intercourse in the past year and that 26% of self-defined bisexual men had not. Overall, 19% of homosexual/bisexual men reported vaginal intercourse in the past year and a further 42% in their lifetime. Compared with heterosexual men attending our clinic, the practising bisexual men were significantly more likely to come from a white ethnic group (P < 0.003) and to use condoms invariably with regular female partners (P = 0.0001). There was no significant difference in consent for HIV testing between homosexual (43%), practising bisexual (49%) and heterosexual (42%) men despite significantly different perceptions of risk. None of the practising bisexual men was seropositive for HIV infection (P = 0.06) or for syphilis (P = 0.02), or had chlamydial infection, which was found infrequently among homosexual men in general (P = 0.00001). HIV infection found in 19.4% of the exclusively homosexual men was associated with more frequent alcohol consumption (P=0.06).
我们对一家泌尿生殖医学诊所男性患者的研究表明，自我归类为同性恋或双性恋并不能准确界定行为。我们发现，在自我认定为同性恋的男性中，有8.5%在过去一年中有过异性性行为，而在自我认定为双性恋的男性中，有26%在过去一年中没有过异性性行为。总体而言，19%的同性恋/双性恋男性报告在过去一年中有过阴道性交，另有42%在其一生中曾有过。与到我们诊所就诊的异性恋男性相比，有实际性行为的双性恋男性更有可能来自白人种族群体（P < 0.003），并且总是会与固定的女性伴侣使用避孕套（P = 0.0001）。尽管对风险的认知存在显著差异，但同性恋男性（43%）、有实际性行为的双性恋男性（49%）和异性恋男性（42%）在接受HIV检测的同意率方面没有显著差异。在有实际性行为的双性恋男性中，没有一人HIV感染血清学呈阳性（P = 0.06）或梅毒血清学呈阳性（P = 0.02），也没有衣原体感染，而衣原体感染在一般同性恋男性中很少见（P = 0.00001）。在仅为同性恋的男性中，19.4%的HIV感染与更频繁饮酒有关（P = 0.06）。
