Table 2.
Variable importance for detecting renal impairment
| Rank | Logistic regression (defiance difference) | Random forest (mean decrease Gini) |
Deep learning (relative importance) |
|---|---|---|---|
| 1 | Age (−4789) | Age (1587.1) | Age (0.173) |
| 2 | Heart rate (−854) | T wave axis (1411.1) | QT interval (0.141) |
| 3 | T-wave axis (−366) | R wave axis (1216.6) | Heart rate (0.134) |
| 4 | QT interval (−286) | P wave axis (1211.1) | T wave axis (0.104) |
| 5 | PR interval (−109) | QT interval (1192.7) | P wave axis (0.097) |
| 6 | P wave axis (−7) | PR interval (1136.5) | QRS duration (0.094) |
| 7 | QRS duration (−5) | QRS duration (1093.1) | PR interval (0.093) |
| 8 | R wave axis (−4) | Heart rate (1068.8) | Sex (0.088) |
| 9 | Sex (−2) | Sex (147.1) | R wave axis (0.075) |