Table 3.

Univariate and multivariate Cox regression analysis

Variable	HR (95% CI)	p-value	Adjusted HR (95% CI)	p-value
Ablation type (Sandwich)	0.32 (0.13–0.78)	0.012	0.28 (0.10–0.76)	0.013
PVC burden > 24%	2.15 (1.10–4.22)	0.026	1.59 (0.83–3.04)	0.165
Ablation duration (per 10 s)	1.21 (1.05–1.38)	0.008	1.18 (1.03–1.36)	0.021
Earliest Activation time (per 10 ms)	2.83 (1.30–6.17)	0.009	2.41 (1.08–5.39)	0.031
Anatomical localization (RVOT vs. Others)	0.41 (0.18–0.92)	0.031	0.38 (0.16–0.88)	0.024
LVEF < 50%	2.47 (1.01–6.05)	0.049	2.36 (1.11–5.02)	0.027

ROC AUC (multivariate model): 0.821, Hosmer-Lemeshow test: p = 0.42

Abbreviatons: LVEF: Left ventricular ejection fraction, RVOT: Right Ventricular Outflow Tract