| Variables | Assignment Meanings | Variable Coefficient β |
| History of present respiratory infection/respiratory failure | 1: No, 2: Yes | 0.958 |
| Craniocerebral diseases | 1: No, 2: Yes | 0.446 |
| Limb mobility | 1: Independent, 2: Partial dependent, 3: Completely dependent | 0.387 |
| Diabetes mellitus | 1: No, 2: Yes | 0.364 |
| Hospitalization time | 1: (>1), 2: (8~), 3: (15~), 4: (22~), 5: (≥29) | 0.269 |
| Edema | 1: No, 2: Yes | 0.273 |
| Norton score | 1: 13 - 14 points (medium risk), 2: ≤12 points (high risk) | 0.266 |
| Defecation | 1: Controllable, 2: occasionally incontinent, 3: completely incontinent | 0.228 |
| Hemoglobin | 1: >120 (male)/110 (female) Normal, 2: (90 - 120 male/110 female) Mild; 3: (60 - 90) moderate, 4: (30 - 59) Severe, 5: < 30 Very heavy | 0.136 |
| Serum creatinine | Actual values | 0.093 |
| Hypertension | 1 = none, 2 = yes | -0.301 |
| Gender | 1 = male, 2 = female | -0.616 |