Accuracy of Xpert MTB/RIF for Mycobacterium tuberculosis detection among patients with recurrent tuberculosis
| Sensitivity | Specificity | PPV | NPV | |||
| All culture-positive | Smear-positive, culture-positive | Smear-negative, culture-positive | Culture-negative | |||
| Correct tests/ total tests n/N | 82/89 | 79/81 | 3/8 | 52/60 | ||
| % (95% CI) | 92.1 (84.5–96.8) | 97.5 (91.4–99.7) | 37.5 (8.5–75.5) | 86.7 (75.4–94.1) | 91.1 (84.5–96.8) | 88.1 (77.1–95.1) |
PPV: positive predictive value; NPV: negative predictive value.