Crude outcomes stratified by the RCRI
| RCRI 0 N=79 941 | RCRI 1 N=36 848 | RCRI 2 N=13 086 | RCRI 3 N=3971 | RCRI ≥4 N=1069 | P value | |
| Length of stay | <0.001 | |||||
| Median (IQR) | 7 (5–11) | 8 (5–12) | 8 (5–13) | 8 (5–13) | 8 (5–13) | |
| Missing, n (%) | 595 (0.7%) | 240 (0.7%) | 102 (0.8%) | 36 (0.9%) | 10 (0.9%) | |
| 30-day mortality, n (%) | 4077 (5.1%) | 3372 (9.2%) | 1802 (13.8%) | 726 (18.3%) | 231 (21.6%) | <0.001 |
| 90-day mortality, n (%) | 7835 (9.8%) | 5734 (15.6%) | 2835 (21.7%) | 1116 (28.1%) | 345 (32.3%) | <0.001 |
| 1-year mortality, n (%) | 14 465 (18.1%) | 9713 (26.4%) | 4734 (36.2%) | 1797 (45.3%) | 544 (50.9%) | <0.001 |
RCRI, Revised Cardiac Risk Index.