Table 4. Multivariate survival analysis.

Endpoint:	VT/VF recurrence after index ablation			All-cause death
Factor	HR	95% CI	P	HR	95% CI	P
Age >70 yrs				1.6	1.1–2.4	0.01
NYHA class ≥3	1.5	1.1–2.0	0.01	1.9	1.2–2.9	0.005
LVEF ≤25%	1.4	1.1–1.9	0.02	2.4	1.6–3.5	0.00004
Creatinine >1.3 mg/dL				1.6	1.1–2.3	0.02
Amiodarone				1.5	1.0–2.2	0.03

For the legend, see Table 3.