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Feature importance.
| Predictor | Random forest impurity reductiona (%) | Logistic chi-square (df) | P value |
| Age (years) | 81.74 | 462.11 (4) | <.001 |
| CADb | 3.25 | 21.28 (1) | <.001 |
| Sex | 3.01 | 60.61 (3) | <.001 |
| Mitral valve disease | 2.82 | 8.04 (1) | .01 |
| Diabetes mellitus | 2.78 | 18.46 (1) | <.001 |
| Heart failure | 2.43 | 17.59 (1) | <.001 |
| Hypertension | 2.36 | 4.03 (1) | .04 |
| Obesity | 1.62 | 2.61 (1) | .11 |
aFor random forest (synthetic minority oversampling technique resampling).
bCAD: coronary artery disease.
