Table 4.
Ranking of the important features for the prediction of eGFR slope.
| Features | Description | Gini index (importance) | Rank | Overall rank |
|---|---|---|---|---|
| Frequency (visual dictionary) | f1 (red) | 1.23 | 6 | 13 |
| f2 (blue) | 1.21 | 7 | 14 | |
| f3 (green) | 1.55 | 5 | 11 | |
| f4 (black) | 1.96 | 4 | 4 | |
| f5 (cyan) | 0.72 | 9 | 17 | |
| f6 (orange) | 2.14 | 3 | 3 | |
| f7 (yellow) | 2.43 | 1 | 1 | |
| f8 (dark blue) | 2.27 | 2 | 2 | |
| f9 (white) | 0.75 | 8 | 16 | |
| Polynomial coefficient | c1 | 1.77 | 1 | 6 |
| c2 | 1.74 | 2 | 7 | |
| c3 | 1.01 | 5 | 15 | |
| c4 | 1.66 | 3 | 9 | |
| c5 | 1.37 | 4 | 12 | |
| Clinical | Age | 1.73 | 2 | 8 |
| Gender | 0.13 | 6 | 20 | |
| Race | 0.24 | 5 | 19 | |
| Diagnosis | 0.67 | 4 | 18 | |
| eGFR | 1.82 | 1 | 5 | |
| UPC | 1.58 | 3 | 10 |
cn, polynomial coefficients in Eq. (1); UPC, urine protein creatinine ratio.