| Sensitivity% (95% CI) | Specificity% (95% CI) | PPV% (95% CI) | NPV% (95% CI) | |
|---|---|---|---|---|
| GeneXpert performance for TB diagnosis | ||||
| Overall | 81.61 (71.86–89.10) | 98.90 (94.01–99.82) | 98.61 (92.47–99.77) | 84.91 (76.65–91.11) |
| Smear Positive | 100.00 (93.33–100.00) | 100.00 (75.12–100.00) | 100.00 (93.33–100.00) | 100.00 (75.12–100.00) |
| Smear Negative | 53.12 (34.75–70.89) | 98.70 (92.95–99.78) | 94.44 (72.63–99.07) | 83.52 (74.27–90.46) |
| GeneXpert performance for culture confirmation | ||||
| Overall | 90.00 (81.24–95.57) | 96.97 (92.42–99.15) | 94.74 (87.06–98.52) | 94.12 (88.73–97.42) |
| AFB Positive | 100.00 (93.33–100.00) | 100.00 (78.03–100.00) | 100.00 (93.33–100.00) | 100.00 (78.03–100.00) |
| AFB Negative | 69.23 (48.21–85.63) | 96.49 (91.25–99.01) | 81.82 (59.70–94.70) | 93.22 (87.07–97.02) |