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Incidence of HIV and Syphilis among Men Who Have Sex with Men (MSM) in Beijing: An Open Cohort Study.

Liu G, Lu H, Wang J, Xia D, Sun Y, Mi G, Wang L - PLoS ONE (2015)

Bottom Line: Variables which corresponded to increased loss to follow-up included younger age, less education, non-identification of homosexual identity, and migrant status.The predictors for the high HIV incidence included unsafe anal sex, sex after drinking alcohol and STI infection.More research is needed to provide multi-pronged HIV prevention interventions among MSM in order to reduce the increasing burden of HIV and sexually transmitted infections (STIs) in China.

View Article: PubMed Central - PubMed

Affiliation: Beijing Municipality Center for Disease Control and Prevention, Beijing, China.

ABSTRACT

Background: This study investigated HIV and syphilis incidence among men who have sex with men (MSM) in Beijing, China.

Methods: An open cohort was established from September 2009 to April 2012. Participants were followed up with every three to four months after recruitment and for thirty-one months in total. Chi-square tests were used to compare demographic and behavioral characteristics between participants who were followed up with and those lost to follow up. Univariate and multivariate Cox proportional hazards regression analyses were used to examine demographic and behavioral associations with HIV and syphilis incidence.

Results: 69.7% (699/1,003) of the participants finished at least two follow-up surveys during the study period. Variables which corresponded to increased loss to follow-up included younger age, less education, non-identification of homosexual identity, and migrant status. A total of 1,045 person-years (PYs) and 1,016.4 PYs were followed up for HIV and syphilis incidence estimation, respectively. The HIV incidence was 5.9 per 100 PYs and 7.8 per 100 PYs for syphilis. The predictors for the high HIV incidence included unsafe anal sex, sex after drinking alcohol and STI infection.

Conclusion: HIV incidence increased rapidly within the cohort, but syphilis incidence remained stable and decreased. More research is needed to provide multi-pronged HIV prevention interventions among MSM in order to reduce the increasing burden of HIV and sexually transmitted infections (STIs) in China.

No MeSH data available.


Related in: MedlinePlus

Recruitment Tree of the first round of enrollment using the respondent-driven sampling (RDS) method.
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pone.0138232.g001: Recruitment Tree of the first round of enrollment using the respondent-driven sampling (RDS) method.

Mentions: In this study, seven initial “seeds” were chosen to initiate RDS. These “seeds” were recruited through multiple strategies including advertisement in the gay-website www.bf99.com, outreach by a nongovernmental AIDS volunteer group and referrals from sexual transmitted infections (STIs) clinics. Among these 7 seeds, the median age was 31 years old; 4 were not official Beijing residents and 5 had a college degree or above. Each seed was trained to recruit 3 possible eligible members to the study from the target population using a referral card with a unique number. A successfully enrolled individual could be anonymously linked to the index seed. After 17 waves of recruitment, the respondent driven sample was considered stabilized. Respondents were given 50 RMB (less than $8 USD) for each completed survey as compensation for transportation and meals. Fig 1 shows the recruitment tree of the first round of enrollment in our study using the RDS method.


Incidence of HIV and Syphilis among Men Who Have Sex with Men (MSM) in Beijing: An Open Cohort Study.

Liu G, Lu H, Wang J, Xia D, Sun Y, Mi G, Wang L - PLoS ONE (2015)

Recruitment Tree of the first round of enrollment using the respondent-driven sampling (RDS) method.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591335&req=5

pone.0138232.g001: Recruitment Tree of the first round of enrollment using the respondent-driven sampling (RDS) method.
Mentions: In this study, seven initial “seeds” were chosen to initiate RDS. These “seeds” were recruited through multiple strategies including advertisement in the gay-website www.bf99.com, outreach by a nongovernmental AIDS volunteer group and referrals from sexual transmitted infections (STIs) clinics. Among these 7 seeds, the median age was 31 years old; 4 were not official Beijing residents and 5 had a college degree or above. Each seed was trained to recruit 3 possible eligible members to the study from the target population using a referral card with a unique number. A successfully enrolled individual could be anonymously linked to the index seed. After 17 waves of recruitment, the respondent driven sample was considered stabilized. Respondents were given 50 RMB (less than $8 USD) for each completed survey as compensation for transportation and meals. Fig 1 shows the recruitment tree of the first round of enrollment in our study using the RDS method.

Bottom Line: Variables which corresponded to increased loss to follow-up included younger age, less education, non-identification of homosexual identity, and migrant status.The predictors for the high HIV incidence included unsafe anal sex, sex after drinking alcohol and STI infection.More research is needed to provide multi-pronged HIV prevention interventions among MSM in order to reduce the increasing burden of HIV and sexually transmitted infections (STIs) in China.

View Article: PubMed Central - PubMed

Affiliation: Beijing Municipality Center for Disease Control and Prevention, Beijing, China.

ABSTRACT

Background: This study investigated HIV and syphilis incidence among men who have sex with men (MSM) in Beijing, China.

Methods: An open cohort was established from September 2009 to April 2012. Participants were followed up with every three to four months after recruitment and for thirty-one months in total. Chi-square tests were used to compare demographic and behavioral characteristics between participants who were followed up with and those lost to follow up. Univariate and multivariate Cox proportional hazards regression analyses were used to examine demographic and behavioral associations with HIV and syphilis incidence.

Results: 69.7% (699/1,003) of the participants finished at least two follow-up surveys during the study period. Variables which corresponded to increased loss to follow-up included younger age, less education, non-identification of homosexual identity, and migrant status. A total of 1,045 person-years (PYs) and 1,016.4 PYs were followed up for HIV and syphilis incidence estimation, respectively. The HIV incidence was 5.9 per 100 PYs and 7.8 per 100 PYs for syphilis. The predictors for the high HIV incidence included unsafe anal sex, sex after drinking alcohol and STI infection.

Conclusion: HIV incidence increased rapidly within the cohort, but syphilis incidence remained stable and decreased. More research is needed to provide multi-pronged HIV prevention interventions among MSM in order to reduce the increasing burden of HIV and sexually transmitted infections (STIs) in China.

No MeSH data available.


Related in: MedlinePlus