Ninety-day death or readmission probability by PEARL score
| Risk | PEARL score | Derivation cohort, % (n) | Validation cohort, % (n) | All cohorts, % by risk group |
|---|---|---|---|---|
| Low | 0 | 15.1 (25/166) | 16.4 (29/177) | 20.7 (184/890) |
| 1 | 23.6 (49/208) | 23.9 (81/339) | ||
| Intermediate | 2 | 33.8 (48/142) | 36.3 (116/320) | 42.1 (454/1078) |
| 3 | 51.2 (44/86) | 41.7 (111/266) | ||
| 4 | 59.1 (55/93) | 46.8 (80/171) | ||
| High | 5 | 65.2 (43/66) | 60.1 (95/158) | 66.4 (298/449) |
| 6 | 67.5 (27/40) | 69.2 (63/91) | ||
| 7 | 72.2 (13/18) | 70.2 (40/57) | ||
| 8 | 100 (4/4) | 77.8 (7/9) | ||
| 9 | 100 (1/1) | 100 (5/5) | ||
| Total | 37.5 (309/824) | 39.4 (627/1593) | 38.7 (936/2417) | |