Differences between men who report frequent, occasional or no unprotected anal intercourse with casual partners among a cohort of HIV-seronegative gay men in Sydney, Australia

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Abstract
Past research on unprotected anal intercourse with casual partners (UAIC) contrasts those who report no UAIC with any UAIC. This paper examines differences among three groups of men who had any UAIC on the basis of the number of UAIC acts reported in a six-month period, namely no UAIC (n = 507), occasional UAIC (1–5 acts, n = 251) and frequent UAIC (more than 5 acts, n = 148). The occasional UAIC group had values lying between those of the no- and the frequent-UAIC group. As compared with the frequent-UAIC group, men in the occasional-UAIC group were less likely to have a steady partner, held less favorable attitudes toward condoms and higher levels of HIV treatments optimism and were more likely to report some disclosure of serostatus to or by casual partners and a range of esoteric sexual practice. On the other hand, men in the no-UAIC group had lower levels of ‘feeling bad’ (distress) and were less likely to use drugs to enhance sexual pleasure in casual encounters. Disclosure of serostatus had a strong association with frequent UAIC and this finding calls for both more research and more community exploration of issues surrounding sexual decision-making.