ROC Curve Analysis for Diagnostic Accuracy
The ROC-curve analysis demonstrated that all parameters were significantly accurate predictors of severe MR diagnosis. The AUC of the MVVTI/LVOTVTI, MVAVTI-i, MVAVTI/LVOTDVTI, and E velocity-LA area-i were 0.976, 0.975, 0.986, and 0.895, respectively (all p-values <0.001) (Table 3). The ROC curve is represented in Figure 1.