Table 4. STI and sexual risk behavior differences between MSMW, MSMO, and MSWE.
| Outcome variables | Comparisongroup | Number of studies | Odds ratio (95% CI) | Effect sizeP- value | Event rate estimate, MSMW (95% CI) | Event rate estimate, comparison (95% CI) |
| STI diagnosis or symptoms* | MSMO | 4 | 0.87 (0.67, 1.13) | .287 | 22.0% (5.2%, 58.6%) | 26.6% (8.8%, 57.7%) |
| MSWE | 3 | 2.64 (0.73, 9.51) | .138 | 17.2% (4.7%, 46.9%) | 7.3% (3.0%, 16.4%) | |
| UAI | MSMO | 4 | 0.91 (0.58, 1.42) | .665 | 32.7% (22.1%, 45.3%) | 33.1% (26.6%, 40.4%) |
| URAI | MSMO | 4 | 0.36 (0.28, 0.46) | <.001 | 15.9% (10.6%, 23.0%) | 35.0% (28.1%, 42.5%) |
| UIAI with male | MSMO | 4 | 1.08 (0.87, 1.34) | .490 | 36.5% (25.0%, 49.9%) | 34.7% (25.1%, 45.8%) |
| UIAI with female | MSWE | 2 | 1.80 (1.29, 2.52) | .001 | 16.6% (10.1%, 26.0%) | 10.4% (8.5%, 12.6%) |
| UVI | MSWE | 4 | 0.61 (0.27, 1.39) | .237 | 43.8% (29.4%, 59.4%) | 55.6% (45.8%, 65.0%) |
*
All studies included measured any STI rather than individual kinds of STI, except one [42]: for this study, we used data only on human papillomavirus symptoms/diagnosis in these analyses.