Statistical Analysis
The statistical analysis was performed using Stata version 14.0
(StataCorp LLC, College Station, TX). Descriptive statistics were used
to summarize demographic characteristics. Continuous variables were
assessed for normality with the Kolmogorov-Smirnov test. All normally
distributed data were analyzed using an unpaired Student t test. A
2-tailed P value < 0.05 was considered statistically
significant. Data found to be non-normally distributed were analyzed
using Mann–Whitney U test. Comparisons of proportions between different
groups of patients were carried out using a Chi square and Fisher’s
exact test. Kaplan-Meier survival curves were utilized to compare time
to primary outcomes (arrhythmia recurrence) between groups. Uni- and
multivariable logistic regression models were used to assess
relationships between variables of interest and arrhythmia recurrence.
Cox proportional hazards were used to determine the association between
variables of interest and time to the primary outcome.