TABLE 2.
Median values, interquartile ranges, and P values obtained by each test
| Test | Median value (interquartile range) for: |
P value | |
|---|---|---|---|
| TB patients (n = 89) | Controls (n = 99) | ||
| ELISA (QFT) (IU/ml) | |||
| Nila | 0.19 (0.15–0.31) | 0.03 (0.02–0.08) | <0.0001 |
| TB antigenb | 9.77 (2.08–10.00) | 0.00 (−0.01–0.01) | <0.0001 |
| Mitogenb | 10.00 (10.00–10.00) | 10.00 (10.00–10.00) | |
| ELISA (IP-10) (ng/ml) | |||
| Nila | 0.32 (0.16–0.70) | 0.12 (0.04–0.26) | <0.0001 |
| TB antigenb | 7.83 (2.69–15.20) | 0.00 (−0.04–0.06) | <0.0001 |
| Mitogenb | 9.71 (5.67–16.70) | 9.65 (7.78–12.96) | 0.646 |
| qPCR (IP-10) (fold change) | |||
| TB antigen | 76 (20–153) | 1.25 (0.76–1.95) | <0.0001 |
| Mitogen | 91 (37–230) | 54 (22.09–97.68) | 0.005 |
a
Unstimulated.
b
QFT TB antigen-/mitogen tube-stimulated with nil subtracted.