Field performance for detection of Treponema pallidum antibodies using a dual HIV/syphilis test
| Number of samples | Total | Sensitivity (95% CI) | Specificity (95% CI) | κ Coefficient* (95% CI) | ||
|---|---|---|---|---|---|---|
| T. pallidum component | Ref test + | Ref test − | 89.2% | 98.8% | 0.98 | |
| Dual test + | 149 | 3 | 153 | (83.5% to 93.5%) | (96.5% to 99.8%) | (0.96 to 1.0) |
| Dual test − | 18 | 243 | 261 | |||
| Total | 167 | 246 | 413 | |||
*Cohen's κ statistic was calculated to determine the concordance between the reference test and the test under evaluation.