2.3 Statistical analyses
We analyzed the data using BellCurve for Excel (version 3.20, Social Survey Research Information Co., Ltd., Tokyo, Japan). To compare the antithrombotic naïve patients and patients undergoing CAT to patients with or without postoperative complications, we used the Mann‒Whitney U test for continuous variables and Fisher’s exact test or chi-square test for categorical variables. A p value < 0.05 was considered statistically significant.