Figure 1
Box plots of the amount of 24 hr urinary excreted Klotho (a) and the serum Klotho levels (b) by CKD stages. The lower border of the box and the upper border of the box represent the first quartile and third quartile, respectively. The whiskers indicate 1.5 times the IR above and below the 25th and 75th percentiles. Outliers (values >1.5 times the IR) are represented by closed circles. *p < 0.05 vs CKD stage I.