Table 2 Summary of diagnostic accuracy of brush biopsies detecting malignancy using different collectors and procedures
Diagnostic test | Accuracy | Upper endpoint (CI: 95%) | Lower endpoint (CI: 95%) | |||
|---|---|---|---|---|---|---|
| Â | Rigid brush | Nylon brush | Rigid brush | Nylon brush | Rigid brush | Nylon brush |
Sensitivity | 95.60% | 93.80% | 0.967 | 0.955 | 0.945 | 0.916 |
Specificity | 84.90% | 94.20% | 0.868 | 0.955 | 0.829 | 0.918 |
Positive predictive value | 36.60% | 69.10% | 0.371 | 0.726 | 0.311 | 0.656 |
Negative predictive value | 99.50% | 99.10% | 0.999 | 0.998 | 0.991 | 0.984 |
Odds ratio | 121.5 | 246.3 | Â | Â | Â | Â |
McNemar test (χ2) | 170.6 | 20.10 |  |  |  |  |