Fig. 5From: Left ventricular systolic function changes in hypertrophic cardiomyopathy patients detected by the strain of different myocardium layers and longitudinal rotationROC analysis for detecting the accuracy of the peak longitudinal systolic strain of different myocardial layers in HCM patients. The area under ROC curve values for the subendocardial, midmyocardial and subepicardial layers were 0.923, 0.938, 0.948, respectively. Sensitivity for the subendocardial, midmyocardial and subepicardial layers were 94.4%, 97.2% and 91.7%, respectively. Specificity for the subendocardial, midmyocardial and subepicardial layers were 80.6%, 83.3% and 88.9%, respectively. Cut-off values for the subendocardial, midmyocardial and subepicardial layers were −19.43%, −16.33% and −15.33%, respectivelyBack to article page