Statistical analysis
Data are expressed as means ± standard deviations for continuous variables and as frequencies and percentages for categorical variables. To compare the two groups, chi-squared analysis or Fisher’s exact test was used for categorical variables and an unpaired t-test or Wilcoxon analysis was used for continuous variables. The follow-up period was calculated from the date of the procedure to the date of primary endpoint or censoring.
The Kaplan-Meier method was used to analyze any unadjusted ATA recurrence rates, which were compared using the log-rank test. A two-side p value less than 0.05 was considered statistically significant. All statistical analyses were performed using SPSS 26.0 (IBM Inc., Armonk, NY, USA).Results