Test performance: summary findings
| NBI colonoscopy vs histology (reference) | Estimate (%) | 95% CI |
|---|---|---|
| Adenoma (yes/no)* | ||
| Sensitivity | 83.4 | 79.6% to 86.9% |
| Specificity | 74.8 | 67.6% to 81.1% |
| PPV | 89.2 | 85.9% to 92.4% |
| NPV | 64.5 | 57.3% to 71.8% |
| Surveillance (yes/no)* | ||
| Sensitivity | 73.0 | 66.5% to 79.9% |
| Specificity | 75.6 | 70.9% to 80.1% |
| PPV | 59.2 | 52.3% to 66.0% |
| NPV | 85.2 | 81.0% to 89.1% |
| Exact match | 67.9 | 64.1% to 71.9% |
| Conservative match | 87.6 | 84.6% to 90.4% |
*For explanation see table 3.
NBI, narrow band imaging; NPV, negative predictive value; PPV, positive predictive value.