ACHU Risk Classificationa | Score | N | Predicted Mortality (%) | Observed Mortality (%) (95% Confidence Interval) | C-statistic |
---|---|---|---|---|---|
Low | ≤1 | 570 | 2.4 | 2.1 (0.1–3.7) | 0.769 |
Low-intermediate | 2 | 110 | 6.4 | 6.4 (2.6–12.7) | |
High-intermediate | 3 | 230 | 11.9 | 14.4 (10.1–19.6) | |
High | ≥4 | 101 | 29.3 | 25.7 (17.6–35.4) |