Statistical analysis
The data were analysed by SPSS 28.0 statistical software. Normally distributed measurement data are presented as x±s, and an independent-sample t test was used for comparisons between groups. Quantitative data with a skewed distribution are presented as the median and quartile, and the Mann‒Whitney test was used for comparisons among groups. Enumerated data are presented as percentiles; the χ2 test was used for comparisons among three groups, and the corrected Bonferroni test was used for pairwise comparisons between groups. Differences were considered statistically significant at P < 0.05.