Table 2.
Field performance for detection of Treponema pallidum antibodies using a dual HIV/syphilis test.
| Number of samples | total | Sensitivity (95% CI*) |
Specificity (95% CI*) |
Kappa Coefficient** (95% CI*) |
||
|---|---|---|---|---|---|---|
|
|
||||||
| T. pallidum Component | Ref test + | Ref test − | 89.2% | 98.8% | .98 | |
| Dual Test + | 149 | 3 | 153 | (83.5%, 93.5%) | (96.5%, 99.8%) | (.96, 1.00) |
| Dual Test − | 18 | 243 | 261 | |||
| total | 167 | 246 | 413 | |||
*
CI = Confidence interval
**
Cohen’s kappa statistic was calculated to determine the concordance between the reference test and the test under evaluation