Table 4.
Performance of various probability thresholds for the expanded model in predicting gastric intestinal metaplasia in the pooled MEDVAMC and CHI-St. Luke’s cohorts.
| Probability Threshold | Sensitivity (%) | Specificity (%) | Patients undergoing endoscopy (%) | Number of EGDs needed to find one case |
|---|---|---|---|---|
| 0.00 | 100.0 | 0.0 | 100 | 8 |
| 0.05 | 92.6 | 17.0 | 84.2 | 7 |
| 0.10 | 74.0 | 59.5 | 44.83 | 5 |
| 0.15 | 55.7 | 78.2 | 26.16 | 4 |
| 0.20 | 50.5 | 85.4 | 19.27 | 3 |
| 0.30 | 31.6 | 92.9 | 10.23 | 3 |
| 0.40 | 11.6 | 98.1 | 3.19 | 2 |
| 0.50 | 4.5 | 99.3 | 1.18 | 2 |
| 0.60 | 0.0 | 100.0 | 0 | - |
| 0.70 | 0.0 | 100.0 | 0 | - |
| 0.80 | 0.0 | 100.0 | 0 | - |
| 0.90 | 0.0 | 100.0 | 0 | - |
| 1.00 | 0.0 | 100.0 | 0 | - |