Univariate analysis of mortality risk factors for patients with COVID-19 pneumonia
| Characteristics | Deceased | Survivors | OR (95%CI) | p-value |
| Patients n | 21 | 158 | ||
| Age group years | ||||
| 0–49 | 0 | 31.0 | 0.000 (0.000–) | 0.997 |
| 50–64 | 19.0 | 38.6 | 2.673 (0.859–8.318) | 0.090 |
| ≥65 | 81.0 | 30.4 | 9.740 (3.113–30.476) | <0.001 |
| Underlying diseases | ||||
| Hypertension | 61.9 | 28.5 | 4.081 (1.584–10.510) | 0.004 |
| Cardiovascular or cerebrovascular diseases | 57.1 | 10.8 | 11.059 (4.068–30.063) | <0.001 |
| Symptoms | ||||
| Dyspnoea | 85.7 | 44.9 | 7.352 (2.082–25.966) | 0.002 |
| Fatigue | 61.9 | 36.7 | 2.802(1.096–7.160) | 0.031 |
| Sputum production | 57.1 | 27.2 | 3.566 (1.403–9.061) | 0.008 |
| Headache | 23.8 | 7.6 | 3.802 (1.187–12.177) | 0.025 |
| Respiratory rate >20 breaths·min−1 | 47.6 | 31.0 | 2.022(0.806–5.076) | 0.134 |
| White blood cells ×109 cells·L−1 | ||||
| >10 | 33.3 | 12.7 | 3.450 (1.242–9.580) | 0.017 |
| 4–10 | 52.4 | 60.1 | 1.371 (0.550–3.418) | 0.499 |
| <4 | 14.3 | 27.2 | 0.446 (0.125–1.590) | 0.213 |
| Neutrophils ×109 cells·L−1 | ||||
| >6.3 | 57.1 | 24.7 | 4.068 (1.594–10.382) | 0.003 |
| 1.8–6.3 | 33.3 | 65.2 | 0.267 (0.102–0.700) | 0.071 |
| <1.8 | 9.5 | 10.1 | 0.934 (0.199–4.384) | 0.931 |
| Lymphocytes <1.1×109 cells·L−1 | 90.5 | 72.2 | 3.667(0.820–16.400) | 0.089 |
| CD3+CD8+ T-cells ≤75 cells·μL−1 | 78.9 | 40.0 | 5.625 (1.664–19.013) | 0.005 |
| C-reactive protein ≥10 mg·L−1 | 95.2 | 87.3 | 2.901 (0.368–22.878) | 0.312 |
| Procalcitonin ≥0.5 ng·mL−1 | 21.1 | 9.9 | 2.438 (0.631–9.414) | 0.196 |
| Cardiac troponin I ≥0.05 ng·mL−1 | 61.5 | 17.9 | 7.314 (1.832–29.210) | 0.005 |
| Myoglobin >100 ng·mL−1 | 64.3 | 18.4 | 8.000 (2.157–29.671) | 0.002 |
| Brain natriuretic peptide >100 pg·mL−1 | 94.1 | 67.6 | 7.680 (0.909–64.906) | 0.061 |
| Aspartate aminotransferase >40 U·L−1 | 47.6 | 29.9 | 2.134 (0.848–5.373) | 0.108 |
| Creatinine ≥133 μmol·L−1 | 19.0 | 2.1 | 11.137 (2.296–54.028) | 0.003 |
| D-dimer ≥0.5 mg·L−1 | 76.2 | 47.9 | 3.474 (1.152–10.481) | 0.027 |
| PaO2 mmHg | ||||
| ≥80 | 14.3 | 41.7 | 0.233 (0.065–0.840) | 0.026 |
| 60–79 | 28.6 | 32.4 | 0.834 (0.298–2.334) | 0.730 |
| <60 | 57.1 | 25.9 | 3.810 (1.451–10.004) | 0.007 |
| PaO2:FIO2 <200 mmHg | 47.6 | 29.2 | 2.204 (0.854–5.684) | 0.102 |
Data are presented as %, unless otherwise stated. PaO2: arterial oxygen tension; FIO2: inspiratory oxygen fraction.