Skip to main content

Table 2 Stratified meta-analyses of HIV prevalence among older MSM of China

From: High prevalence of HIV infection and unprotected anal intercourse among older men who have sex with men in China: a systematic review and meta-analysis

Subgroups Prevalence % (95% CI) No of studies Heterogeneity
I2% p Value
Sample size     
> 200 7.2%(5.4%-9.5%) 3 70.67 <0.05
≤ 200 13.6%(8.4%-21.2%) 17 55.86 <0.05
Study year     
2003-2007 9.9%(2.7%-30.6%) 4 89.30 <0.05
2008-2009 12.1%(6.8%-20.5%) 9 81.04 <0.05
2010-2011 13.6%(8.2%-21.8%) 7 >0.05
Study location     
East China 13.0%(6.8%-23.4%) 8 32.12 >0.05
Nationwide 7.2%(5.4%-9.5%) 3 70.67 <0.05
North China 14.7%(2.7%-51.5%) 2 70.91 >0.05
South China 12.3%(3.3%-36.6%) 3 35.25 >0.05
Southwest 16.4%(2.8%-57.4%) 3 83.90 <0.05
West China 9.5%(2.4%-31.1%) 1 <0.05
Recruitment settings     
Medical settings 7.9%(6.7%-9.3%) 11 >0.05
Multiple gay venues or events 17.4%(7.6%-35.0%) 9 89.20 <0.05
Sampling method     
Mixed 15.5%(8.0%-27.8%) 10 52.88 <0.05
RDS 8.0%(6.7%-9.6%) 2 2.98 >0.05
Snowballing 9.8%(4.7%-19.2%) 8 78.12 <0.05