Statistical analysis
Data analysis was conducted using SPSS version 22.0 (IBM Corp.) and
Prism version 8.0.2 (Graphpad Software, Inc.), adopting a significance
threshold of P < 0.05. The differences in cumulative survival
without PVCs or VT between the control group and the ICE group are
depicted using Kaplan-Meier curves. To ascertain predictors of both
immediate and sustained success, logistic regression analyses were
employed. The findings are presented as odds ratios (ORs) with
corresponding 95% confidence intervals (CIs). A comprehensive list of
potential confounders was considered, including age, sex, ICE
utilization, origins of PVCs, PVC burden, duration of PVCs, abnormal
LVEF, abnormal LVEDD, left atrial diameter of 40 mm or greater,
cardiovascular comorbidities, smoking habits, alcohol intake, and
obesity (defined as a body mass index of 28.0 or higher). Variables that
reached a significance level of P < 0.10 in the initial
analyses were incorporated into a multivariable logistic regression
model to identify independent predictors.