Table 2 Distribution of subjects by estimated 30/60-day mortality and stratified risk group in both samples
| Â | Derivation sample (1252) | Validation sample (1235) | ||
|---|---|---|---|---|
30-day mortality | ||||
 Risk group (Fig. 1) | No (1206) | Yes (36) | No (1193) | Yes (42) |
 Low | 785 (99.1) | 7 (0.9) | 769 (98.7) | 10 (1.3) |
— | — | — | — | — |
 Medium | 218 (96.0) | 9 (4.0) | 243 (97.2) | 7 (2.8) |
 High | 146 (91.8) | 13 (8.2) | 135 (93.1) | 10 (6.9) |
 Very high | 57 (77.0) | 17 (23.0) | 46 (75.4) | 15 (24.6) |
 AUC | 0.808 (0.742 – 0.873) | 0.767 (0.686 – 0.847) | ||
60-day mortality | ||||
 Risk group (Fig. 2) | No (1173) | Yes (79) | No (1159) | Yes (76) |
 Low | 515 (99.4) | 3 (0.6) | 507 (98.4) | 8 (1.6) |
 Medium | 183 (96.8) | 6 (3.2) | 160 (94.7) | 9 (5.3) |
— | — | — | — | — |
 High | 387 (90.6) | 40 (9.4) | 424 (92.8) | 33 (7.2) |
 Very high | 88 (74.6) | 30 (25.4) | 68 (72.3) | 26 (27.7) |
 AUC | 0.798 (0.757 – 0.838) | 0.744 (0.691 – 0.898) | ||