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Objective To investigate the AIDS-related high risk behaviors of men who havesex with men (MSM) who ever exchanged money for the same sex. Methods Target sampling forcross-sectional study and valid anonymous questionnaires were adopted to compare the differences ofAIDS-related high risk behaviors between MSM with the experience of exchanging money for thesame sex and those without that experience. 1959 rstadied samples were recruited in nine cities. SPSS13.0 was used and t, x 2 and Mann-Whitney tests were taken for statistical analysis. ResultsCompared to corresponding ones without "buying" the same sex experience, MSM who ever engagedin "buying" sex had the characteristics of being prone to in marriage and living in larger cities witholder age and higher income (P＜0.01). They also had a significant larger number in the followingevents: total sexual panners, anal sex and oral sex episodes with same sex, number of sexualpartners, 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 malepartners away from his own region in the previous year, 70.5% had sexual intercourse withstrangers 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 werehigher 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.
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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.
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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.
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Objective To evaluate the effects of socioeconomic status on the distribution of cardiovascular risk factors and clinicaltreatments of patients with acute myocardial infarction in Beijing.Methods In Beijing, a prospective, muhi-center, registration study was carried out which including 800 patients who were consecutively hospitalized for ST-segment elevation acute myocardial infarction within 24 hours after event attack in 19 different hospitals in Beijing between November, 2005 and December, 2006.Indicators of socioeconomic status included self-reported personal income (＜500, 500-2000,＞2000 RMB/month), educational attainment (≤ 12 and ＞ 12 years) and status of medical insurance (yes/no).According to categories of education, patients were categorized into two groups of lower socioeconomic status and higher socioeconomic status. Differences of cardiovascular risk factors and clinical treatments were compared across the two groups respectively. Results Proportion of diabetes and hyperlipidemia in patients with higher socioeconomic status was much higher than that of patients with lower socioeconomic status (P＜0.05, P＜0.01 respectively). Patients with lower socioeconomic status were more likely to be smokers (P ＜0.05). The rates of receiving coronary angiography and PTCA were much lower in patients with lower socioeconomic status. Medical insurance and income were the most important two socioeconomic factors determining the use of PTCA. Conclusion Compared to patients with lowersocioeconomic status,patients with higher socioeconomic status had higher rates of hyperlipidemia and diabetes but lower smoking rate among cardiovascular risk factors. The rates of receiving interventional therapies were much lower in patients with lower socioeconomic status.