Multivariate analysis of risk factors for the severe/critical patients with COVID-19 with GI symptoms
| Risk factor | OR (95% CI) | P value |
| Sputum production | 11.40 (1.89 to 68.73) | 0.008 |
| From infected area | 0.09 (0.02 to 0.54) | 0.008 |
| Increased LDH | 24.77 (4.60 to 133.33) | 0.000 |
| Increased glucose | 2.42 (1.43 to 4.10) | 0.001 |
LDH, lactate dehydrogenase.