Table 4.
Feature importance of 28 d mortality prediction by RF (%).
| Test 1 | Test 2 | Test 3 | Test 4 | ||||
|---|---|---|---|---|---|---|---|
| Feature | Importance | Feature | Importance | Feature | Importance | Feature | Importance |
| BE | 20.39 | BE | 23.38 | BE | 19.88 | BE | 20.29 |
| RDW-SD | 9.07 | Solid tumor | 6.00 | RDW-SD | 10.11 | RDW-CV | 8.55 |
| RDW-CV | 5.53 | RDW-CV | 5.80 | Solid tumor | 5.55 | ||
| Solid tumor | 5.35 | RDW-SD | 5.43 | RDW-SD | 5.54 | ||
| ~ Lower than 5% ignored ~ | |||||||
Abbreviation: RF, random forest; BE, base excess; RDW-SD, Red cell distribution width standard deviation; RDW-CV, Red cell distribution width coefficient of variation.