HIV prevalence by demographic characteristics and sexual behaviors among MSM in Guangzhou, 2008–2013.

a<p>Pearson chi-square test.</p>b<p>Likelihood ratio chi-square test.</p>c<p>UAI, unprotected anal intercourse; UVI, unprotected vaginal intercourse; STI, sexually transmitted infection.</p

UAI rates of HIV-positive and HIV-negative MSM in Guangzhou stratified by the factors associated with HIV infection, 2008-2013.

a<p>UAI, unprotected anal intercourse.</p>b<p>Pearson chi-square test.</p>c<p>Likelihood ratio chi-square test.</p

Factors associated with HIV infection among MSM in Guangzhou, 2008–2013, by Logistic regression model.

a<p>UAI, unprotected anal intercourse.</p

Demographic characteristics and key behaviors of MSM in Guangzhou, China, 2008–2013.

a<p>Pearson chi-square test.</p>b<p>Linear-by-linear association chi-square test.</p>c<p>UAI, unprotected anal intercourse; UVI, unprotected vaginal intercourse; STI, sexually transmitted infection.</p