Fig. 4

Association between receiving renal biopsy or not and long-term renal outcomes for CKD patients with impaired renal function stratified by baseline 24 h UTP. (A) Effects of receiving renal biopsy or not on long-term renal outcomes for patients with baseline 24 h UTP ≤ 1 g/d (P = 0.664). (B) Effects of receiving renal biopsy or not on long-term renal outcomes for patients with baseline 24 h UTP > 1 g/d (P = 0.0102). The blue and red line separately illustrate the renal survival probability over time for patients receiving renal biopsy or not