Assay (N = 99) | TB culture | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) | |
positive | negative | ||||||
LFD-LAMP TB positive | 7 | 7 | 58.3 (27.7 - 84.8) | 92 (84.1 - 96.7) | 50 (23 - 77) | 94.1 (86.8 - 98.1) | 87.8 |
LFD-LAMP TB negative | 5 | 80 | |||||
Xpert MTB/RIF ultrat positive | 10 | 18 | 83.3 (51.6 - 97.9) | 79.3 (69.3 - 87.3) | 35.7 (18.6 - 55.9) | 97.2 (90.2 - 99.7) | 79.8 |
Xpert MTB/RIF ultrat negative | 2 | 69 |