Sample Characteristics (N = 1393).

*UAI with 2 or more partners, UAI with casual partners, and/or UAI with unknown/discordant partners in the previous 12 months. †HIV treatment optimism – ‘I am less worried about HIV infection now that treatments have improved’.* 过去12个月内，与2名及以上性伴侣、临时性伴侣，或未知感染状态、血清学不一致的伴侣发生无保护肛交（UAI）。 † HIV治疗乐观度："如今治疗手段已得到改善，我对HIV感染的担忧有所减少"。