Statistics
The continuous variables are listed as means ± standard deviation, and the categorical variables are presented as numbers and percentages. Continuous variables were compared between the AF nonrecurrence group and the AF recurrence group using Student’s t-test or the Wilcoxon Rank-Sum test. We employed the chi-squared test to compare the categorical variables between the groups. We tested for an association between the clinical variables and the primary composite endpoint using the multivariate Cox proportional hazards model with a stepwise procedure to evaluate the effect of covariates. We estimated the cumulative clinical adverse event rates using the Kaplan–Meier method and analyzed the differences with the log-rank test. Two-sided P-values <0.05 were considered statistically significant. We employed SPSS version 25.0.0.0 (IBM, Armonk, NY, USA) for all statistical analyses.