Youden index cut-offs of the derivation cohort
| Variable | Cut-off |
| Age (years) | ≥59.50 |
| Systolic blood pressure (mm Hg) | ≥163.50 |
| Creatinine (mg/dL) | ≥1.35 |
| INR | ≥1.25 |
| PTT (s) | ≥31.40 |
| Hemoglobin (g/dL) | ≤12.75 |
| Platelets (103/µL) | ≤224.50 |
| Base excess (mmol/L) | ≤−4.35 |
| Temperature (°C) | ≤36.25 |
↵INR, international normalised ratio; PTT, partial thromboplastin time.