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.