Summary statistics of thresholds of 7-day mortality at 2.5%
| Thresholds | Sensitivity (%) | Specificity (%) | PPV (%) | LR | |
| Respiratory frequency | |||||
| L 2.5% | ≤11/min | 2.7 (1.6–4.2) | 99.6 (99.5–99.6) | 11.1 (6.7–17.0) | 6.0 (3.7–9.8) |
| L 2.5%-U 2.5% | 12–18/min | ||||
| U 2.5% | ≥19/min | 52.6 (48.8–56.5) | 77.3 (76.8–77.7) | 4.6 (4.1–5.1) | 2.3 (2.2–2.5) |
| Systolic blood pressure | |||||
| L 2.5% | ≤111 mm Hg | 32.2 (28.8–35.7) | 88.8 (88.5–89.1) | 5.5 (4.9–6.3) | 2.9 (2.6–3.2) |
| L 2.5%-U 2.5% | 112–192 mm Hg | ||||
| U 2.5% | ≥193 mm Hg | 4.7 (3.3–6.6) | 97.4 (97.2–97.6) | 3.6 (2.5–4.9) | 1.8 (1.3–2.5) |
| Heart rate | |||||
| L 2.5% | ≤53/min | 4.5 (3.1–6.3) | 97.8 (97.6–97.9) | 4.0 (2.7–5.5) | 2.0 (1.4–2.9) |
| L 2.5%-U 2.5% | 54–102/min | ||||
| U 2.5% | ≥103/min | 31.8 (28.4–35.3) | 83.1 (82.7–83.5) | 3.7 (3.2–4.2) | 1.9 (1.7–2.1) |
| Glasgow Coma Scale | |||||
| 2.5% | ≤14 | 53.7 (50.3–57.0) | 93.2 (93.0–93.5) | 16.8 (15.5–18.3) | 7.9 (7.4–8.5) |
| <2.5% | 15 | ||||
| Temperature | |||||
| L 2.5% | ≤35.9°C | 27.2 (23.5–31.2) | 88.8 (88.4–89.1) | 4.0 (3.4–4.7) | 2.4 (2.1–2.8) |
| L 2.5%-U 2.5% | 36.0°C–39.8°C | ||||
| U 2.5% | ≥39.9°C | 1.1 (0.4–2.4) | 99.6 (99.5–99.7) | 4.5 (1.7–9.6) | 2.7 (1.2–6.2) |
| Saturation | |||||
| 2.5% | ≤96% | 52.8 (48.9–56.6) | 73.5 (73.1–74.0) | 3.8 (3.4–4.2) | 2.0 (1.9–2.2) |
| <2.5% | 97%–100% | ||||
| Creatinine | |||||
| L 2.5% | ≤40 µmol/L | 1.7 (0.9–3.0) | 99.2 (99.1–99.3) | 4.2 (2.2–7.2) | 2.0 (1.1–3.6) |
| L 2.5%-U 2.5% | 41–98 µmol/L | ||||
| U 2.5% | ≥99 µmol/L | 57.0 (53.3–60.7) | 79.1 (78.7–79.6) | 5.6 (5.1–6.1) | 2.7 (2.6–2.9) |
| PaO2 | |||||
| L 2.5% | ≤9.8 kPa | 42.7 (38.2–47.3) | 60.8 (59.9–61.7) | 4.7 (4.1–5.4) | 1.1 (1.0–1.2) |
| L 2.5%-U 2.5% | 9.9–12.3 kPa | ||||
| U 2.5% | ≥12.4 kPa | 38.7 (34.3–43.3) | 72.9 (72.0–73.7) | 6.1 (5.3–7.0) | 1.4 (1.3–1.6) |
| Platelets | |||||
| L 2.5% | ≤164/L | 22.4 (19.3–25.8) | 88.5 (88.1–88.8) | 4.5 (3.8–5.3) | 1.9 (1.7–2.3) |
| L 2.5%-U 2.5% | 165–327/L | ||||
| U 2.5% | ≥328/L | 23.3 (20.1–26.8) | 84.9 (84.4–85.3) | 3.6 (3.1–4.2) | 1.5 (1.3–1.8) |
| Bilirubin | |||||
| <2.5% | <13 µmol/L | ||||
| 2.5% | ≥13 µmol/L | 41.0 (37.1–44.9) | 73.3 (72.8–73.8) | 3.3 (2.9–3.7) | 1.5 (1.4–1.7) |
L, Lower; LR, likelihood ratio; PPV, positive predictive value; U, Upper.