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Figure 1 Receiver operating characteristic (ROC) curve illustrating overall accuracy of the absolute magnitude of ST segment deviation in leads V5 and V6 for the identification of echocardiographic left ventricular hypertrophy. The area of 0.726 ± 0.25 under the ROC curve was highly significant for the detection of hypertrophy (p < 0.001). Representative partition values of ST deviation are illustrated alongside the ROC curve at the points corresponding to their sensitivity and specificity.