Accuracy and seropositivity data from Mumbai and Montreal
| Category | Mumbai N=375 | Montreal N=109 |
|---|---|---|
| Sensitivity | ||
| HIV | 100% (95% CI 94.8% to 100%) | 100% (95% CI 47.3% to 100%) |
| HBV | 13.3% (95% CI 6.6% to 23.2%) | NA |
| HCV | 50.0% (95% CI 1.3% to 98.7%) | 80.4% (95% CI 66.1% to 90.6%) |
| Syphilis | 86.1% (95% CI 70.5% to 95.3%) | 100% (95% CI 22.4% to 100%) |
| Specificity | ||
| HIV | 99.7% (95% CI 98.3% to 99.9%) | 100% (95% CI 97.2% to 100%) |
| HBV | 99.3% (95% CI 97.6% to 99.9%) | 100% (95% CI 97.3% to 100%) |
| HCV | 99.7% (95% CI 98.5% to 99.9%) | 85.3% (95% CI 73.8% to 93.0%) |
| Syphilis | 85.2% (95% CI 80.9% to 88.8%) | 98.1% (95% CI 93.3% to 99.8%) |
| Prevalence | ||
| HIV | 14.9% (95% CI 13.1% to 16.7%) | 3.7% (95% CI 1.2% to 9.7%) |
| HBV | 20.0% (95% CI 18.0% to 22.0%) | NA |
| HCV | 0.5% (95% CI 0.2% to 0.9%) | 42.2% (95% CI 32.9% to 52.0%) |
| Syphilis | 9.9% (95% CI 8.4% to 11.4%) | 1.8% (95% CI 0.3% to 7.1%) |
HBV, hepatitis B; HCV, hepatitis C; NA, not available.