Statistical analyses
Continuous variables were expressed as mean ± standard deviation or
median (25th–75th percentile).
Chi-squared (χ2) analysis or Fisher’s exact test was
used for categorical variables. Data were analyzed with one-way analysis
of variance or Student’s t-test. A P value <0.05 was
considered statistically significant. Kaplan-Meier survival curve
analysis with log-rank tests was applied to examine the survival-free
from AF recurrence in the samples of this study. Multivariate logistic
regression included variables with P <0.05 on univariate
analysis. It was used to analyze the risk factors of MI reconnection
with results expressed as odds ratios with 95% confidence intervals.
JMP version 14.3 (SAS institute Inc, Cary, NC, USA) was used to perform
these statistical analyses.