Statistical analysis
Continuous variables are expressed as mean ± standard deviation (SD) or median (25th-75th), depending on the distribution of data, whereas categorical variables are expressed as counts and percentages. The Wilcoxon test was used for between-group comparisons of continuous variables. The analysis of variance (ANOVA) test was used to compare continuous variables, and when a statistical difference was noted, post hoc test with Tukey’s HSD was added.The Kaplan-Meier method was used to identify the AF-free rate after procedure. p<0.05 was considered statistically significant. All statistical analyses were performed using JMP version 10.0 (SAS Institute Inc., Cary, NC).