Table 2.
Variable importance for 30‐day and 90‐day mortality prediction with gradient boosting learning
| 30‐day mortality | 90‐day mortality | ||
|---|---|---|---|
| Variable | Importance | Variable | Importance |
| PNI | 37.45 | Age | 36.25 |
| Age | 32.11 | PNI | 35.28 |
| NLR | 20.46 | NLR | 14.59 |
| Pneumonia | 6.04 | Pneumonia | 7.05 |
| Skin ulcer | 1.16 | UTI | 2.29 |
| UTI | 1.03 | Skin ulcer | 1.43 |
| Parkinson's disease | 0.49 | Male sex | 0.57 |
| Male sex | 0.45 | Falls | 0.48 |
| Skin and soft tissue infection | 0.25 | Parkinson's disease | 0.46 |
| Gout | 0.23 | Charlson score ≥2 | 0.46 |
| Falls | 0.19 | Arthritis | 0.35 |
| Charlson score ≥2 | 0.13 | Skin and soft tissue infection | 0.34 |
| Arthritis | 0.01 | Gout | 0.31 |
| Mycoses | 0.01 | Mycoses | 0.15 |
| Depression | 0 | Depression | 0 |
| Paranoia | 0 | Paranoia | 0 |
NLR, neutrophil‐to‐lymphocyte ratio; PNI, prognostic nutritional index; UTI, urinary tract infection.