Model discrimination in the derivation and validation cohorts and compared to the gender–age–physiology (GAP) model
| GAP | Sparse | Full | |||||
| C-index (95% CI) | C-index (95% CI) | Difference compared to GAP | p-value for difference | C-index (95% CI) | Difference compared to GAP | p-value for difference | |
| Continuous models | |||||||
| Derivation | 68.8 (65.3–72.2) | 71.0 (67.8–74.2) | 2.3 | 0.055 | 71.3 (68.1–74.6) | 2.6 | 0.032 |
| Validation | 66.1 (61.8–70.5) | 70.0 (65.6–74.3) | 3.8 | 0.001 | 70.3 (66.1–74.5) | 4.2 | 0.003 |
| Point-score models | |||||||
| Derivation | 69.4 (66.1–72.7) | 72.6 (69.5–75.6) | 2.8 | 0.005 | 71.9 (68.9–75) | 2.5 | 0.040 |
| Validation | 65.5 (61.3–70) | 68.1 (64.1–72.1) | 2.5 | 0.037 | 68.2 (64–72.3) | 2.6 | 0.079 |