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Table 4 ROC analysis of the TTFM

From: Transit time flow measurement predicts graft patency in off-pump coronary artery bypass grafting upon 5-year angiographic follow-up

Variables Cut-off AUC 95% CI P-value Sensitivity Specificity
LIMA       
MGF 14.5 0.875 0.789–0.961  < 0.001 0.896 0.800
PI 3.45 0.725 0.536–0.914 0.017 0.917 0.600
DF 57.5 0.560 0.357–0.762 0.525 0.984 0.300
DIAG       
MGF 14.5 0.921 0.857–0.985  < 0.001 0.968 0.750
PI 2.45 0.633 0.495–0.772 0.056 0.698 0.625
DF 60.5 0.484 0.325–0.642 0.816 0.937 0.292
OM       
MGF 14.5 0.935 0.876–0.993  < 0.001 1 0.769
PI 2.85 0.751 0.628–0.873  < 0.001 0.795 0.692
DF 60.5 0.737 0.621–0.853  < 0.001 0.877 0.500
PDA       
MGF 13.5 0.956 0.911–1  < 0.001 0.926 0.931
PI 2.65 0.755 0.651–0.858  < 0.001 0.735 0.690
DF 67.5 0.689 0.576–0.802 0.003 0.456 0.828
PLA       
MGF 16.5 0.905 0.794–1  < 0.001 0.952 0.700
PI 1.85 0.690 0.495–0.886 0.091 0.524 0.900
DF 60.5 0.545 0.287–0.803 0.688 0.810 0.500
  1. The ROC analysis representing the cut-off graft flow for predicting 5-year Follow-up graft failure
  2. ROC, receiver operating characteristic; LIMA, left internal mammary artery; SVG, saphenous vein graft; MGF, mean graft flow; PI, pulsatile index; DF, diastolic filtration; AUC, area under curve; CI, confidence interval