Table 5: PPV & NPV.
| Sensitivity(95% CI) | Specificity(95% CI) | PPV(95% CI) | NPV(95% CI) | True positives | False positives | False negatives | True negatives | |
| % | % | % | % | NO. | NO. | NO. | NO. | |
| Endoscopy | 67% (50%-80%) |
85% (81%-89) |
34% (24%-46%) |
96% (92%-98%) |
39 | 15 | 41 | 286 |
PPV: Positive Predictive Value; NPV: Negative Predictive Value.