Multivariate logistic regression analysis of mortality risk factors for patients with severe acute respiratory infection
| Variables | OR (95% CI) | p-value |
| Age ≥65 years | 3.765 (1.201–11.803) | 0.023 |
| Cardiovascular or cerebrovascular diseases | 2.464 (1.279–4.747) | 0.007 |
| CD3+CD8+ T-cells ≤75 cells·μL−1 | 3.982 (1.761–9.004) | <0.001 |
| Cardiac troponin I ≥0.05 ng·mL−1 | 4.077 (1.778–9.349) | <0.001 |