Fig. 1

a-c Boxplots of FBG for each time point across patients with primary total joint arthroplasty. a The fluctuation of FBG for each time point in patients with primary total joint arthroplasty. b, c The fluctuation of FBG for each time point in patients with primary total joint arthroplasty grouped by diabetic status. The asterisks indicate a significant difference between groups. The P values were calculated using the Kruskal-Wallis H test and corrected by Bonferroni analysis. Solid lines within the box indicate median, top, and bottom lines of the box equal interquartile range (IQR), whiskers indicate values within 1.5 IQR of the top or bottom of the box, and circle or plus symbols represent outliers. Dashed lines within the box indicate mean and the red line represents the fluctuation of the mean of FBG. PRD indicates preoperative day. POD indicates postoperative day, and the number represents the day after surgery