Feature performance plot stratified by Charlson Comorbidity Index groups
| Top features | Group 1 | Group 2 | Group 3 |
| 10 | Heart rate | Age | Heart rate |
| 9 | RVSP | Systolic blood pressure | Systolic blood pressure |
| 8 | Systolic blood pressure | RVSP | Age |
| 7 | Diuretic use | LVEDD | Sodium |
| 6 | LVEF | Diuretic use | LVEDV |
| 5 | Lung disease | Diastolic blood pressure | RVSP |
| 4 | Sodium | Sodium | LVEF |
| 3 | Creatinine | Stroke volume index | Creatinine |
| 2 | Diastolic blood pressure | Creatinine | Diuretic use |
| 1 | LVEDD | A Fib | Lung disease |
A Fib, atrial fibrillation; LVEDD, Left ventricular end-diastolic dimension; LVEF, Left ventricular ejection fraction; RVSP, right ventricular systolic pressure.