Biopsy and polypectomy specimens: sensitivity, predictive value, and confidence limits*
| Examination | Subgroup | Sensitivity (CI) | Predictive value (CI) |
|---|---|---|---|
| *Biopsy results are those of both the primary and reference pathologists; polypectomy results are those of the primary pathologist. | |||
| Biopsy—primary pathologist | Neoplastic | 0.89 (0.79–0.98) | 0.89 (0.79–0.98) |
| Biopsy—reference pathologist | 0.91 (0.82–1.00) | 0.98 (0.93–1.00) | |
| Ectomy—primary pathologist | 0.98 (0.93–1.00) | 0.96 (0.89–1.00) | |
| Prevalence | 0.20 | ||
| Biopsy—primary pathologist | Tumour-like | 0.93 (0.89–0.97) | 0.97 (0.94–1.00) |
| Biopsy—reference pathologist | 0.96 (0.93–0.99) | 0.97 (0.94–1.00) | |
| Ectomy—primary pathologist | 0.99 (0.97–1.00) | 0.97 (0.93–1.00) | |
| Prevalence | 0.77 | ||