Fig. 2From: Frailty assessment and risk prediction by GRACE score in older patients with acute myocardial infarctionKaplan-Meier survival plot for the year following index hospital admission, stratified by frailty status. Frailty defined by CFS thresholds for not frail (CFS 1–3), vulnerable or mild frailty (CFS 4–5) and moderate to severe frailty (CFS 5–9). Log rank test for difference p < 0.001Back to article page