[Behavioral characteristics of men who have sex with men with sadomasochism associated with bleeding].

Objective: To investigate the behavioral characteristics of men who have sex with men (MSM)with sadomasochism associated bleeding and to analyze the relationship with HIV/AIDS high risk behavior.

Methods: Using modified snowball sampling methods (target sampling methods) to carry out a cross-sectional study on persons with behavior of sadomasochism that associated with bleeding in MSM, using a valid questionnaire. Another control group without the related behavior was set up.

[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.

[Study on the association of partner-seeking and high risk behaviors related to AIDS among men who have sex with men in the different sites].

Objective: To explore the situation of AIDS-related high risk behaviors among men who have sex with men (MSM) ever experienced partner-seeking in different sites.

Methods: Target sampling for cross-sectional study ("snowball") and valid anonymous questionnaires were adopted to compare the differences of high risk behaviors related to AIDS. 1834 MSM were studied in nine cities who sought sex partners through internet, bars or bath ponds.

[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.

[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.

[Associations between partner-seeking activities through Internet and sexual risk behaviours related to HIV/AIDS among men who have sex with men in China].

Objective: To explore the associations between partner-seeking activities through internet and HIV/AIDS related risk behaviours among men who have sex with men (MSM).

Methods: Target sampling, anonymous questionnaires were adopted and analyzed with SPSS 11.0.

[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.

[Study on the comparison of high risk behaviors related to AIDS between heterosexual and homosexual men among men who have had sex with men].

Objective: To study the risk sexual behaviors related to AIDS between heterosexual and homosexual men who have had sex with men.

Methods: Target sampling, anonymous questionnaires were adopted to compare sexual behaviors between the two groups.

Results: The total amount of sex partners with same-sex was 13.

[Study on 1389 men who have sex with men regarding their HIV high-risk behaviors and associated factors in mainland China in 2004].

Objective: To study the HIV related high-risk behaviors and associated factors on the spread of HIV among men having sex with men(MSM) who lived in mainland China and to provide evidence for developing related policies and intervention measures.

Methods: Questionnaires were distributed at gay bars and volunteer activity venues in six big cities of China. Data on 1389 valid cases was collected and urine HIV screening test was provided.

MSM and HIV/AIDS in China.

This article profiles current status of spread and control of HIV/AIDS in China. China has a significant population of MSM (men who have sex with men) and they have been becoming very much alive in many ways since 1990s due to recent social changes. Some surveys indicate that great many of MSM are engaged in high-risk behaviors.