Table 2.
Correlation of fluorescence and ZN staining techniques with Xpert MTB/Rif.
| Staining Technique | XPERT MTB/Rif | Kappa | P-value | PPV (%) | NPV (%) | |
|---|---|---|---|---|---|---|
| Positive | Negative | |||||
| Fluorescence | ||||||
| Positive | 71 (84.5) | 0 (0.0) | 0.864 | p≤0.001 | 100 | 92.1 |
| Negative | 13 (15.5) | 116 (100) | ||||
| ZN | ||||||
| Positive | 46 (54.8) | 0 (0.0) | 0.584 | p≤0.001 | 100 | 77.3 |
| Negative | 38 (45.2) | 116 (100) | ||||
Data is represented in raw figures and percentages. P-value is statistically significant if p < 0.05 as compared between Xpert MTB/Rif and fluorescence microscopy, Xpert MTB/Rif and ZN.