Age (years) | Score | Comorbidities (N) | Score | RR (breaths/min) | Score | PaO2/FiO2 | Score | Creatinine (mg/dL) | Score | Platelet count (109/L) | Score | Risk categories (sum of individual variable scores) |
<62 | 1 | ≤1 | 1 | ≤20 | 1 | >300 | 1 | <0.83 | 1 | >212 | 1 | Low ≤10 |
62–74 | 2 | 2–3 | 2 | 21–24 | 2 | 236–299 | 2 | 0.83–1.12 | 2 | 156–211 | 2 | Intermediate=11–13 |
≥75 | 3 | ≥4 | 3 | ≥25 | 3 | <236 | 3 | ≥1.13 | 3 | <156 | 3 | High risk ≥14 |
Categories represent the tertile distribution of each variable.