Table 2. C-index analysis of the clinical risk factors to predict the mortality of COVID-19.
| C-index(95%CI) | Onset of admission | After admission | |
|---|---|---|---|
| Risk factors | 7 Days | 15 Days | |
| D-Dimer | 0.782 (0.736-0.828) | 0.883 (0.835-0.929) | 0.898 (0.832-0.954) |
| CRP | 0.845 (0.807-0.883) | 0.866 (0.825-0.908) | 0.854 (0.809-0.920) |
| PCT | 0.839 (0.797-0.881) | 0.800 (0.741-0.864) | 0.663 (0.592-0.733) |
| LDH | 0.757 (0.700-0.815) | 0.721 (0.663-0.779) | 0.814 (0.761-0.866) |
| WBC | 0.680 (0.622-0.738) | 0.706 (0.642-0.771) | 0.754 (0.696-0.812) |
| Neutrophil | 0.720 (0.665-0.775) | 0.740 (0.676-0.804) | 0.780 (0.722-0.837) |
| Lymphocyte | 0.674(0.596-0.747) | 0.739 (0.683-0.794) | 0.718 (0.655-0.782) |
| Platelet | 0.678 (0.609-0.747) | 0.723 (0.660-0.786) | 0.674 (0.578-0.769) |
| Haemoglobin | 0.587 (0.508-0.666) | 0.503 (0.412-0.583) | 0.532 (0.429-0.635) |
| CK | 0.635 (0.569-0.706) | 0.654 (0.570-0.738) | 0.529 (0.433-0.626) |
| AST | 0.653 (0.584-0.722) | 0.625 (0.537-0.712) | 0.676 (0.574-0.779) |
Abbreviations: D-dimer, Dimerized plasmin fragment D; CRP, C-reactive protein; PCT, procalcitonin; LDH, lactate dehydrogenase; WBC, white blood cell; CK, creatinine kinase; AST, aspartate aminotransferase; CI, confidential interval.