Figure 3

Serial change in the eGFR and serum indoxyl sulfate level. The black colored words and figure show the patients with non-CKD, and the red colored words and figure show the patients with CKD. The circles, triangles, squares, and cross marks represent non-CKD/low-IS, non-CKD/high-IS, CKD/low-IS, and CKD/high-IS, respectively.