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Kaplan Meier survival curves for all-cause mortality in the sub-cohort, by (A) cystatin C-based eGFR, (B) beta-2 microglobulin-based eGFR, and (C) creatinine-based eGFR. The sub-cohort includes 508 participants with 68 all-cause mortality events. eGFR, estimated glomerular filtration rate.
