Figure 1: Kaplan-Meier survival curves for non-CKD (a) and CKD (b) patients stratified with cut-off SSS and ΔeGFR.
The cut-off values of SSS (summed stress score) and ΔeGFR were the best values suggested by the receiver operating characteristic analysis.
CKD: chronic kidney disease; non-CKD patients: eGFR ≥ 60, n = 1,139; CKD patients: eGFR < 60, n = 600 [24].

figure 1