Impact of Serum Creatinine– and Cystatin C–Based Sarcopenia Index on Renal Outcomes in Non–Dialysis-Dependent Chronic Kidney Disease Patients: Results From the KNOW-CKD Study

To evaluate the impact of the serum creatinine- and cystatin C-based new sarcopenia index (SI) on renal outcomes in non-dialysis-dependent patients with chronic kidney disease (CKD).