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