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Kaplan-Meier estimates for the occurrence of cardiac events in low (n = 50)- and high (n = 165)-risk patients. Among high-risk patients, the presence of perfusion defect was closely associated with adverse cardiac outcomes (HR 3.16; 95% CI 1.65-6.04, P = .001) (A) and the presence of CAD significantly increased the risk of cardiac events (HR 1.94 95% CI 1.38-2.71, P < .001) (B)
