Statistical analyses
SPSS version 26.0 and GraphPad Prism 8.0 software were used for statistical analyses. Quantitative data are reported as the means and standard deviations (normal distribution) or medians and interquartile ranges (nonnormal distribution). The T-test (normal distribution) and Mann–Whitney U test (nonnormal distribution) were used to compare independent samples between 2 groups. Comparisons among multiple groups of samples were analyzed using one-way ANOVA (normal distribution) and the Kruskal–Wallis H test (nonnormal distribution), while the Bonferroni-corrected Mann–Whitney U test was used for intergroup comparisons. Qualitative data are reported as frequencies and percentages. The chi-square test or Fisher’s exact test was performed to compare qualitative variables. The nonparametric Spearman correlation analysis was used to analyze the correlations between two continuous variables. A P value < 0.05 was considered statistically significant. A receiver operating curve (ROC) was constructed to evaluate the efficacy of the expression levels of different molecules in predicting MG recurrence.