Derivation population | Validation population | ||||||
---|---|---|---|---|---|---|---|
Risk class | Score | N | ICU ≤ 3 days, % (95% CI) | Death ≤ 28 days, % (95% CI) | n | ICU ≤ 3 days, % (95% CI) | Death ≤ 28 days, % (95% CI) |
I | ≤ 3 | 2510 | 1.1 (0.7 to 1.6) | 1.2 (0.8 to 1.8) | 1099 | 1.3 (0.7 to 2.1) | 1.9 (1.2 to 2.9) |
II | 4 to 6 | 1498 | 5.5 (4.4 to 6.8) | 6.0 (4.8 to 7.3) | 633 | 7.1 (5.2 to 9.4) | 4.4 (3.0 to 6.3) |
III | 7 to 8 | 419 | 11.0 (8.2 to 14.4) | 9.1 (6.5 to 12.2) | 164 | 12.2 (7.6 to 18.2) | 7.9 (4.2 to 13.2) |
IV | ≥ 9 | 166 | 27.1 (20.5 to 34.5) | 15.1 (10.0 to 21.4) | 71 | 32.4 (21.7 to 44.5) | 22.5 (13.5 to 34.0) |
Total | 4593 | 4.4 (6.0 to 7.4) | 4.0 (3.4 to 4.6) | 1967 | 5.2 (5.8 to 8.0) | 4.0 (3.1 to 4.9) |