Statistical Analysis
Continuous variables are summarized as mean ± standard deviation and
dichotomous variables are presented as the number and percent of
subjects. Baseline and procedural characteristics are summarized as
means. Kaplan-Meier methods were used to estimate the 36-month freedom
from atrial arrhythmia. Standard error was calculated with Greenwood’s
formula. Values of p <0.05 were considered statistically
significant. Statistical analyses were performed with Statistics
Kingdom.