Objective: To explore the risk of sexual behaviors related to AIDS among unmarried men who often have sex with women.
Methods: Study objectives were recruited through target sampling and anonymous questionnaires were adopted. Men' s sexual behaviors were compared with each other between the group of men who always had sex with women (group A) and who never had sex with women (group B) in the past 6 months.
Results: The average numbers of same-gender partners among group A who acted as the male role in the past 6 months and who had anal intercourse in the last month were 5.64 and 3.09 respectively, which were both higher than those of group B's (P < 0.05). The rate of condom use among men in group A when having sex with men was 81.94%. The percentages of condom use among men in group A who having had oral or anal sex with male sex buyers last time were 15.38% and 70.27% respectively. They were all higher than those of group B' s (P < 0.05 or 0.01). The rates of men in group A who were male sex workers and who having had sex with unknown men in gay places during the past 6 months were 27.59% and 61.70% respectively. Among group A, the percentages of men who had had sex with unknown men during the last time and who had had sex with nonlocal male partners during the past year were 43.06% and 40.28% respectively. They were all higher than those of group B's (P < 0.01). The percentage of condom use among men in group A when having had sex with women during the past 6 months was 68.94%, but only 25.96% of the men used condom regularly. The rate of condom use in men from group A when having sex with women during the last sexual intercourse was 65.45%.
Conclusion: HIV high-risk sex behaviors were more ubiquitous among unmarried MSM who always had sex with women, suggesting that different interventions be developed to prevent them from transmitting HIV from MSM to women or other men.