Fig. 2From: Early post-stress decrease in cardiac performance by impedance cardiography and its relationship to the severity and extent of ischemia by myocardial perfusion imagingROC curve for myocardial ischemia > 10% vs. change in SI (cut off = 0) from rest to stress. Note the AUC with 95% CI, sensitivity, and specificity. AUC = under the curve; CI = confidence interval; ROC = Receiver operator characteristic; SI = Stroke indexBack to article page