[Study on the AIDS-related high risk behaviors of men who have sex with men under the experience of exchanging money for the same sex].

OBJECTIVE: To investigate the AIDS-related high risk behaviors of men who have sex with men (MSM) who ever exchanged money for the same sex. METHODS: Target sampling for cross-sectional study and valid anonymous questionnaires were adopted to compare the differences of AIDS-related high risk behaviors between MSM with the experience of exchanging money for the same sex and those without that experience. 1959 rstadied samples were recruited in nine cities. SPSS 13.0 was used and t, χ(2) and Mann-Whitney tests were taken for statistical analysis. RESULTS: Compared to corresponding ones without "buying" the same sex experience, MSM who ever engaged in "buying" sex had the characteristics of being prone to in marriage and living in larger cities with older age and higher income (P < 0.01). They also had a significant larger number in the following events: total sexual partners, anal sex and oral sex episodes with same sex, number of sexual partners, anal sex and oral sex in the previous six months, with the figure of median 50.0, 20.0, 20.0, 5.0, 4.0, 5.0 respectively. 31.5% had ever participated in 'group sex', 48.0% had sex with male partners away from his own region in the previous year, 70.5% had sexual intercourse with strangers at MSM avenues in the last six months. The OR (95%CI) values were 2.288 (1.702 - 3.077), 3.231 (2.462 - 4.241), 2.840 (2.140 - 3.770). All the above mentioned figures were higher than those without the experience, with significant differences. They had a significant lower rate of 45.7% of condom use while having sex with female partners (P < 0.05). CONCLUSION: MSM with the experience of exchanging money for the same sex would have more AIDS-related high risk behaviors, AIDS preventative measures should be taken to target different subgroups.

[Study on the high risk behaviors related to AIDS among men who having sex with men in the floating population].

OBJECTIVE: To explore the risks on sexual behaviors related to AIDS among men who having sex with men (MSM) in floating population and to develop relevant interventions. METHODS: Study objectives were recruited through target sampling and anonymous questionnaires were adopted. Male sexual behaviors were compared between floating population and permanent registered residents. RESULTS: Among those MSM, the average numbers of same-gender partners, oral sex, anal sex and sex with females during the past 6 months among floating population were 9.61, 8.61, 7.52 and 1.17 respectively. Numbers of partners on oral sex and anal sex during the past month were 2.89 and 3.69 respectively. Both figures were higher than those of the permanent registered residents (P<0.05 or P< 0.01). The rates of condom use among floating population when having anal sex with men or with non-marital female partners were 37.15% and 23.28% respectively. The figures were all higher than those of permanent registered residents' (P<0.05 or P<0.01). Among floating population, the percentages of men who had sex with male sex workers or who had sex with men acquainted through inter-net or with stable female sex partners were 17.89%, 12.56%, and 31.86% respectively. The rates of men who had group sex among gay men, who bled when having sex with men or who had sex with men from other areas during the past year were 22.13%, 31.38% and 32.36% respectively. The figures were all higher than those of permanent registered residents' (P<0.05 or P<0.01). CONCLUSION: Sex-related high risk behaviors were more ubiquitous among floating population than those of permanent registered residents because they were more likely to transmit HIV to people from/to other areas. More attention should be paid to the floating population with MSM in particular, when health interventions are carried out.

[Study on HIV/AIDS related high risk behaviors among unmarried men who have sex with women].

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.

[Study on the comparison of high risk behaviors related to AIDS among different status of income in men who have had sex with men].

OBJECTIVE: To explore the risk sexual behaviors related to AIDS among different status of income among men who have had sex with men and to provide relevant interventions for AIDS control and prevention. METHODS: Study objectives were recruited through target sampling and anonymous questionnaires were adopted. Men's sexual behaviors were reported under the categories as high, mid or low-income. RESULTS: The total number of same-gender partners with high and mid-income was 110.17 with an average of 71.97. Among high and mid-income men, the number of partners for oral sex was 62.45, with an average of 46.6 respectively. The number of partners having anal intercourse was 52.21, with an average of 32.3, obviously more than in the low-income group (P < 0.01). The rates of condom use among high-income and mid-income men were 79.03% and 77.29% respectively and were higher than that those among low-income men (P < 0.01). The percentage of high-income men who recently had had sex with male sex workers was 3.81%, higher than that of the mid-income and the low-income men (P < 0.01). The rates of high-income and mid-income men who had paid for sex from men were 24.27% and 14.7% respectively and were all higher than that of the low-income men with the highest in the high-income group (P < 0.01). The rates of high-income and mid-income men who were male sex workers were 6.72% and 11.05% respectively, which were all lower than that from the low-income group (P < 0.01). CONCLUSION: The characteristics of sexual behaviors related to AIDS were different in the three groups. In high-income group, risk sexual behaviors also existed, suggesting that different interventions for different people should be developed.