STATISTICAL ANALYSIS
Continuous variables are expressed as the mean ± SD values, and
categorical variables are expressed as the number and percentage of
patients. A Student t-test or Mann-Whitney U test was used, as
appropriate, to analyze the differences in the continuous variables, and
the chi-square test was used to analyze the differences in the
dichotomous variables. All statistical analyses were performed with R
version 4.1.0 software.