Statistical Analysis
Perioperative data were analyzed using SPSS 26.0 software (SPSS Inc., Chicago, Illinois, USA). Continuous variables were expressed as means and standard deviations. Categorical variables were expressed as percentages. Continuous variables were compared using Student t-test, ANOVA analysis or non-parametric tests, and categorical variables were analyzed using chi-square test and Fischer’s exact test. And the significant differences were defined at p<0.05.