Table 3.
Concordance between the three diagnostic tests described in all subjects, HIV seropositive subjects and HIV seronegative subjects
| Test in HIV positive subjects (n = 298) | Agreement (%) | κ | 95% Confidence Interval |
|---|---|---|---|
| TST vs QFT | 75% | 0.53 | 0.43, 0.64 |
| TST vs TSPOT | 76% | 0.4 | 0.3, 0.52 |
| TSPOT vs QFT | 74% | 0.37 | 0.26, 0.49 |
| Test in HIV negative subjects (n = 298) | Agreement (%) | κ | 95% Confidence Interval |
| TST vs QFT | 72% | 0.44 | 0.33, 0.55 |
| TST vs TSPOT | 70% | 0.3 | 0.2, 0.4 |
| TSPOT vs QFT | 75% | 0.46 | 0.35, 0.57 |
TST: Tuberculin Skin Test
QFT: Quantiferon-TB Gold In Tube Test
TSPOT: TSPOT.TB Test
HIV: Human Immunodeficiency Virus