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Performance and stability of the IT-3 model.
| Training cohort | Validation cohort | |
|---|---|---|
| (n = 289) | (n = 156) | |
| Brier score | 0.06 | 0.06 |
| Sensitivity (%) | 91.7 | 80.0 |
| Specificity (%) | 70.2 | 83.0 |
| 1,000-time bootstrap AUC (95% CI) | 0.888 (0.810–0.947) | 0.833 (0.687–0.950) |
| 1,000-time bootstrap accuracy (%) | 90.9 | 91.3 |
AUC, the area under curve; CI, confidence interval.
