Statistical analysis
We used the Mann-Whitney U test to compare the differences between the
two independent groups when the dependent variable was either ordinal or
continuous, but not normally distributed. Multivariable logistic
regression models were used to estimate the relationship among the
average SVC-ERP, longer SVC diameter, and pacing inducibility of AF. All
statistical analyses were conducted using Stata (version 16.1; StataCorp
LLC, College Station, TX, USA).