Table 5

Results of the ROC Curve Analysis

AUCOptimal CutoffAccuracy (%)Sensitivity (%)Specificity (%)
MPG, mm Hg0.84928.0758374
DVI0.9160.29759284
EOAi, cm2/m20.8760.65678366
dA, cm20.9250.37879286
AT, ms0.93694.5949294
AT/ET0.9330.31898390

Receiver-operating characteristic (ROC) curve analysis was performed to assess the accuracy of echocardiography-derived parameters in discriminating between normal and abnormal aortic prosthesis function.

AUC = area under the curve; MPG = mean transprosthetic pressure gradient; other abbreviations as in Tables 2 and 4.