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Accuracy, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for indigo carmine using HD and SD endoscopes
| HD | SD | p value | |
|---|---|---|---|
| Accuracy (95% C.I.) | 92.0% (88–95) | 89.0% (85–93) | 0.51 |
| Sensitivity (95% C.I.) | 96.2% (91–99) | 90.9% (85–94) | 0.317 |
| Specificity (95% C.I.) | 84.4% (75–89) | 87.1% (73–95) | 1.000 |
| PPV (95% C.I.) | 91.5% (86–94) | 94.6% (89–98) | 0.54 |
| NPV (95% C.I.) | 92.7% (82–98) | 79.4% (67–87) | 0.17 |
