Table 2 Stratified analyses of HIV prevalence among MSM in China
From: The prevalence of HIV among MSM in China: a large-scale systematic analysis
Variable | Number of studies | HIV prevalence | Heterogeneity of included studies | |||
|---|---|---|---|---|---|---|
I2 | Q | p | OR | |||
Age (yrs.) | ||||||
 <20 | 33 | 4.6% [3.4%; 6.3%] | 64.0% | 79.4 | <  0.0001 |  |
 20-29 | 32 | 7.2% [5.9%; 8.7%] | 91.6% | 276.2 | <  0.0001 |  |
 30-39 | 30 | 11.8%[10.0%; 13.8%] | 75.2% | 120.8 | <  0.0001 |  |
 40-49 | 30 | 13.8%[11.0%; 17.1%] | 51.8% | 37.4 | 0.0047 |  |
 50+ | 13 | 19.3%[13.1%; 27.4%] | 50.2% | 26.1 | 0.0166 |  |
Sampling methods | ||||||
 RDS | 39 | 5.4% [4.7%; 6.3%] | 90.3% | 627.4 | <  0.0001 |  |
 Snowball | 126 | 6.4% [5.9%; 7.0%] | 96.6% | 3132.0 | <  0.0001 |  |
 Time-venue | 83 | 5.4% [4.6%; 6.3%] | 96.9% | 2694.4 | <  0.0001 |  |
 Convenience | 11 | 4.2% [3.3%; 7.3%] | 96.2% | 173.5 | <  0.0001 |  |
 Multiple methods | 42 | 5.0% [3.9%; 6.4%] | 99.0% | 3762.7 | <  0.0001 |  |
Marital status | ||||||
 Single | 57 | 6.4% [5.5%; 7.5%] | 94.5% | 876.3 | <  0.0001 |  |
 Cohabitating | 21 | 11.5% [7.8%; 16.5%] | 67.8% | 65.3 | <  0.0001 |  |
 Married | 42 | 10.6% [9.2%; 12.0%] | 72.5% | 152.9 | <  0.0001 |  |
 Divorced or widowed | 49 | 12.8%[10.0%; 16.4%] | 81.6% | 240.9 | <  0.0001 |  |
Current level of education | ||||||
 Illiterate | 3 | 16.8% [6.4%;37.3%] | 0.0% | 0.8 | 0.6683 |  |
 Primary school | 11 | 15.6% [11.0%;21.6%] | 25.4% | 14.7 | 0.1948 |  |
 Junior high school | 20 | 9.8% [7.4%; 12.9%] | 86.8% | 151.8 | <  0.0001 |  |
 Senior high school | 50 | 7.6% [6.4%; 9.0%] | 89.5% | 428.6 | <  0.0001 |  |
 College or above | 62 | 5.7% [5.0%; 6.5%]] | 87.7% | 464.9 | <  0.0001 |  |
Sexual orientation | ||||||
 Homosexual | 23 | 7.0% [5.4%; 9.1%] | 93.4% | 540.3 | <  0.0001 |  |
 Bisexual | 10 | 6.1% [4.5%; 8.3%] | 69.0% | 32.2 | 0.0004 |  |
 Heterosexual | 11 | 7.5% [4.4%; 12.7%] | 59.3% | 27.0 | 0.0045 |  |
 Undetermined | 7 | 7.6% [3.2%; 16.8%] | 0.0% | 15.4 | 0.0175 |  |
Main location to seek homosexual partners | ||||||
 Internet | 20 | 7.3% [5.8%; 9.1%] | 94.2% | 314.7 | <  0.0001 |  |
 Parks | 19 | 6.0% [4.8%; 7.4%] | 38.2% | 38.2 | 0.0037 |  |
 Public bathhouses/saunas | 22 | 13.4%[10.3%; 17.1%] | 88.6% | 162.3 | <  0.0001 |  |
 Bar/night/club/tearoom | 23 | 7.4% [5.8%; 9.3%] | 98.9% | 141.2 | <  0.0001 |  |
Ethnicity | ||||||
 Han Chinese | 15 | 6.3% [4.9%; 8.0%] | 95.6% | 317.7 | <  0.0001 | 0.78[0.30,2.03] |
 Other | 15 | 7.0% [3.4%; 14.0%] | 93.6% | 218.9 | <  0.0001 | |
Condom use (in the last 6 months) | ||||||
 During sex with men | ||||||
  Always | 27 | 4.4% [3.3%; 5.8%] | 91.1% | 321.5 | <  0.0001 |  |
  Sometimes | 27 | 8.2% [6.3%; 10.5%] | 96.0% | 510.5 | <  0.0001 |  |
  Never | 27 | 9.9% [7.4%;13.1%] | 84.5% | 145.1 | <  0.0001 |  |
 During commercial sex with men | ||||||
  Always | 15 | 2.9% [1.6%; 5.0%] | 69.8% | 39.8 | <  0.0001 |  |
  Sometimes | 15 | 6.6% [4.0%; 10.7%] | 85.2% | 59.8 | <  0.0001 |  |
  Never | 14 | 8.5% [5.3%; 13.2%] | 26.3% | 23.7 | 0.0345 |  |
Condom use during sex with a woman in the past 6 months | ||||||
 Always | 11 | 4.1% [2.5%; 6.4%] | 48.1% | 20.5 | 0.021 |  |
 Sometimes | 9 | 3.4% [1.7%; 6.6%] | 80.2% | 42.4 | <  0.0001 |  |
 Never | 10 | 5.9% [3.2%; 10.7%] | 86.9% | 71.4 | <  0.0001 |  |
Occupation | ||||||
 Student | 12 | 6.1% [4.5%; 8.4%] | 59.8% | 29.8 | 0.0029 |  |
 Teacher | 2 | 5.3% [1.1%; 22.8%] | 0.0% | 0.6 | 0.7348 |  |
 Office staff | 12 | 8.0% [6.2%; 10.2%] | 76.2% | 50.5 | <  0.0001 |  |
 Farmer | 2 | 14.8% [3.8%; 43.2%] | 93.4% | 30.3 | <  0.0001 |  |
 Service business employee | 8 | 8.1% [5.6%; 11.6%] | 90.3% | 82.7 | <  0.0001 |  |
 Jobless or job-seeking | 9 | 10.3% [8.4%; 12.6%] | 31.2% | 13.1 | 0.159 |  |
 Worker | 8 | 8.6% [7.5%; 9.9%] | 33.1% | 12.0 | 0.1533 |  |
Sexual debut partner | ||||||
 Male | 8 | 6.8% [4.0%; 10.1%] | 95.4% | 152.8 | <  0.0001 | 0.60[0.53,0.69] |
 Female | 8 | 10.2% [6.6%; 14.4%] | 94.5% | 127.4 | <  0.0001 | |
Drug use | ||||||
 Yes | 7 | 6.4% [4.2%; 10.0%] | 42.9% | 10.5 | 0.1046 | 1.14[0.31,4.21] |
 No | 7 | 8.2% [2.4%; 17.0%] | 99.2% | 770.7 | <  0.0001 | |
Quality ssessment | ||||||
 satisfactory | 142 | 5.5% [4.6%; 6.6%] | 96.5% | 2481.5 | <  0.0001 | 0.74[0.60, 0.92] |
 good | 213 | 7.4% [6.5%;8.4%] | 97.7%% | 1823.0 | <  0.0001 | |