Table 2 Rates of mortality in 5 different risk strata predicted by the XGBoost model in the internal validation dataset (n = 568)
Risk strata | Predictive hospital-mortality risk (%) | Rate of total study population (%) | Hospital-mortality (%) |
|---|---|---|---|
Very low | ≤ 5 | 245 (43.1%) | 2.0 |
Low | 5–10 | 98 (17.2%) | 10.2 |
Moderate | 10–30 | 130 (22.9%) | 11.5 |
High | 30–50 | 47 (8.3%) | 21.2 |
Very high | > 50 | 48 (8.5%) | 56.2 |