Statistics
Categorical variables are expressed as counts (percentages) and compared
with the chi-squared test or Fisher’s exact test. Continuous variables
are expressed as mean (standard deviation) or median [interquartile
range] and compared using Student’s t-test and Mann–Whitney U test,
respectively. Event-free survival rates were estimated by the
Kaplan–Meier method. Univariate and multivariate logistic regression
analyses were used to determine clinical factors associated with AF
recurrence after the final procedure and extent of LVAs, wherein
variables with a P value < 0.05 in the univariate models were
included in the multivariate analysis. All analyses were performed using
SPSS 26.0 (IBM Corporation, Armonk, NY). P values of less than 0.05 were
considered statistically significant.