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( A ) Kaplan–Meier estimated cumulative event rate by four ABC-stroke risk classes for the CHA 2 DS 2 -VASc score (panel): 0–1, 2, 3, 4, and ≥5 points. ( B ) Kaplan–Meier estimated cumulative event rate by the CHA 2 DS 2 -VASc score: 0–1, 2, 3, 4, and ≥5 points for the three ABC-stroke risk classes (panel): 0–0.3%, 0.3–1%, 1–2, and >2%.
