Table 2.

Feature ranking for the 1-month (left sub-table) and 1-year (right sub-table) endpoints. For each ranking method (column name), the average rank across 100 iterations is shown. An additional ranking based on the average of ranks across the four methods is shown in the AVG column. Both sub-tables are sorted by the AVG column.

1-Month VT Recurrence
	AVG	XGB, RFE	MLP, PI	RF, PI	XGB, PI
HD instability	1	0	0	0	6
LVEF	2	1	4	2	1
TAPSE	3	7	1	3	4
Age	4	3	13	4	0
Clinical VT eliminated	5	2	3	5	12
LVESD	6	4	12	1	5
ICD shock	7	9	2	7	9
Clinical VT cycle length	8	6	14	6	2
E wave DT	9	5	10	11	3
Electrical storm	10	8	6	9	8
MR	11	10	8	8	10
Incessant VT	12	11	5	13	11
Inducible VT morphologies	13	16	7	10	13
NYHA	14	13	15	15	7
All VTs eliminated	15	12	11	14	15
Atrial fibrillation	16	15	9	16	14
TR III-IV	17	14	16	12	16
1-year VT recurrence
	AVG	XGB, RFE	MLP, PI	RF, PI	XGB, PI
LVESD	1	1	4	0	0
Inducible VT morphologies	2	0	0	1	7
MR	3	4	1	2	6
ICD shock	4	6	2	3	9
Age	5	2	13	5	1
E wave DT	6	5	6	7	3
LVEF	7	3	12	8	2
HD instability	8	8	3	4	10
TAPSE	9	7	7	9	4
Incessant VT	10	9	5	11	11
Clinical VT cycle length	11	10	16	6	5
NYHA	12	11	8	10	8
All VTs eliminated	13	13	10	12	13
TR III-IV	14	12	14	13	12
Electrical storm	15	14	9	16	14
Atrial fibrillation	16	15	11	14	15
Clinical VT eliminated	17	16	15	15	16

HD: hemodynamic; LVEF: left ventricular ejection fraction; VT: ventricular tachycardia; LVESD: left ventricular end systolic diameter; DT: deceleration time; TAPSE: tricuspid annular plane systolic excursion; ICD: implantable cardioverter defibrillator; MR: mitral regurgitation; TR: tricuspid regurgitation; XGB, RFE; Extreme gradient boosting sing recursive feature elimination; MLP, PI: Multilayer perceptron combined with permutation importances; RF, PI: random forest combined with permutation importances; XGB, PI: Extreme gradient boosting combined with permutation importances; AVG: average.