Fig. 4From: Prior ischemic strokes are non-inferior for predicting future ischemic strokes than CHA2DS2-VASc score in hemodialysis patients with non-valvular atrial fibrillationKaplan–Meier curves for cumulative hazard of ischemic stroke in the study population without past history of ischemic stroke (n = 181, event n = 18) according to CHA2DS2VASc-score stratified as low-, intermediate- and high-risk groups (a) and as low and high-risk groups according to the cut-off value obtained from AUC ROC analysis (b)Back to article page