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(A–C). Kaplan-Meier survival curves for tertiles of protein-adjusted serum free thiols, representing CKD-free survival based on the individual determinants of eGFR (<60 mL/min/1.73 m2) and UAE (>30 mg/24-h) as well as on the composite outcome of incident CKD (eGFR, UAE or both). Highest rates of incident CKD were observed in the lowest tertile (T1) of protein-adjusted serum free thiols (log-rank tests, all P < 0.001).
