Table 4 Modified 2 × 2 contingency table of brush biopsies using rigid brush compared to final histologically proven diagnoses
Cytology Test: rigid brush | Histology | |||||
|---|---|---|---|---|---|---|
Positive for malignancy | Negative for malignancy | Total | ||||
Positive | 77 | Â | 12 | Â | 89 | Â |
Suspicious | 15 | 108 | 41 | 187 | 56 | 295 |
Doubtful | 16 | Â | 134 | Â | 150 | Â |
Negative | 5 | Â | 1052 | Â | 1057 | Â |
Total | 113 | Â | 1239 | Â | 1352 | Â |
Overall accuracy | 85.80% | Â | Â | Â | Â | Â |