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. 2021 May 15;22:179. doi: 10.1186/s12882-021-02384-0

Fig. 4.

Fig. 4

Kaplan–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)