Table 2.
The odds and prevalence of HIV among MSMW and MSMO by study and design characteristics.
| Category | Subgroup | Comparison group | Number of studies | Prevalence estimate (%) | Heterogeneity | OR and 95% CI | p value | Heterogeneity | ||
|---|---|---|---|---|---|---|---|---|---|---|
| and 95% CI | I 2 (%) | p value | I 2 (%) | p value | ||||||
| Overall | MSMW | 23 | 6.6 (5.3, 7.8) | 89.2 | <0.001 | 1.27 (1.01, 1.58) | 0.018 | 74.4 | <0.001 | |
| MSMO | 23 | 5.4 (4.7, 6.2) | 83.9 | <0.001 | ||||||
|
| ||||||||||
| Regions | Southwest China | MSMW | 4 | 14.8 (9.3, 20.3) | 79.5 | 0.002 | 2.43 (1.58, 3.72) | 0.004 | 53.3 | 0.093 |
| MSMO | 4 | 6.7 (4.0, 9.5) | 83.2 | <0.001 | ||||||
| East China | MSMW | 3 | 2.7 (0.4, 4.9) | 87.4 | <0.001 | 0.67 (0.32, 1.42) | 0.236 | 61.2 | 0.076 | |
| MSMO | 3 | 5.7 (1.7, 9.6) | 89.5 | <0.001 | ||||||
| Northeast China | MSMW | 3 | 6.5 (2.3, 10.7) | 76.1 | 0.015 | 1.27 (0.89, 1.82) | 0.101 | 0.0 | 0.740 | |
| MSMO | 3 | 5.7 (2.3, 9.2) | 73.4 | 0.023 | ||||||
| North China | MSMW | 7 | 5.2 (4.0, 6.5) | 20.0 | 0.277 | 1.32 (0.89, 1.94) | 0.088 | 43.0 | 0.104 | |
| MSMO | 7 | 4.1 (3.1, 5.1) | 48.8 | 0.069 | ||||||
| Several cities from different regions or those that cannot be classified into the above four categories | MSMW | 6 | 6.3 (4.5, 8.2) | 82.3 | <0.001 | 1.03 (0.78, 1.36) | 0.304 | 61.6 | 0.023 | |
| MSMO | 6 | 6.0 (4.8, 7.2) | 72.0 | 0.003 | ||||||
|
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| Sampling method | RDS | MSMW | 5 | 6.9 (3.8, 10.0) | 95.5 | <0.001 | 1.16 (0.65, 2.09) | 0.218 | 88.9 | <0.001 |
| MSMO | 5 | 6.3 (5.0, 7.6) | 85.4 | <0.001 | ||||||
| All other nonprobability sampling | MSMW | 18 | 6.7 (5.1, 8.3) | 84.8 | <0.001 | 1.30 (1.05, 1.61) | 0.037 | 47.4 | 0.014 | |
| MSMO | 18 | 5.2 (4.2, 6.3) | 83.3 | <0.001 | ||||||
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| Data collection period | Before 2009 | MSMW | 7 | 4.9 (2.8, 6.9) | 94.4 | <0.001 | 0.91 (0.63, 1.32) | 0.103 | 75.1 | <0.001 |
| MSMO | 7 | 5.8 (4.2, 7.4) | 92.6 | <0.001 | ||||||
| 2009 and later | MSMW | 10 | 8.3 (5.9, 10.7) | 71.8 | <0.001 | 1.59 (1.08, 2.33) | <0.001 | 65.3 | 0.002 | |
| MSMO | 10 | 5.6 (4.1, 7.1) | 77.4 | <0.001 | ||||||
| Not reported or cannot be classified into the above two categories | MSMW | 6 | 6.5 (4.6, 8.5) | 75.8 | 0.001 | 1.33 (0.97, 1.84) | 0.376 | 48.8 | 0.082 | |
| MSMO | 6 | 5.0 (3.8, 6.2) | 61.9 | 0.022 | ||||||
|
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| Data collection method | Interviewer-administered | MSMW | 19 | 6.5 (5.1, 7.9) | 90.5 | <0.001 | 1.21 (0.94, 1.56) | 0.245 | 77.1 | <0.001 |
| MSMO | 19 | 5.6 (4.8, 6.5) | 84.3 | <0.001 | ||||||
| Self-administered | MSMW | 2 | 5.4 (2.8, 8.1) | 23.5 | 0.253 | 1.37 (0.91, 2.08) | 0.211 | 0.0 | 0.567 | |
| MSMO | 2 | 3.9 (2.9, 4.8) | 0.0 | 0.449 | ||||||
| Not reported or cannot be classified into the above two categories | MSMW | 2 | 8.5 (3.4, 13.6) | 72.7 | 0.056 | 1.58 (1.01, 2.50) | 0.030 | 0.0 | 0.354 | |
| MSMO | 2 | 5.7 (0.1, 11.2) | 89.2 | 0.002 | ||||||