Evaluation of superficial femoral artery-lesions after percutaneous transluminal angioplasty: color-coded summation images vs. monochromatic digital subtraction angiography

Table 4 Results of ROC-analysis based on a cut-off-value > 2, as well as percentages of decisions concordant to consensus

Participants		monochromatic	color-coded	difference	p-value
A	Sensitivity	0.686	0.669
	Specificity	0.842	0.85
	PPV	0.844	0.853
	NPV	0.684	0.675
	AUC	0.792	0.797	0.005	0.890
	Decision concordant to consensus	0.737	0.728
B	Sensitivity	0.856	0.729
	Specificity	0.768	0.811
	PPV	0.821	0.827
	NPV	0.811	0.706
	AUC	0.865	0.843	0.022	0.453
	Decision concordant to consensus	0.714	0.744
C	Sensitivity	0.729	0.729
	Specificity	0.905	0.800
	PPV	0.905	0.819
	NPV	0.729	0.704
	AUC	0.872	0.804	0.068	0.023
	Decision concordant to consensus	0.803	0.761
A + B + C	Sensitivity	0.757	0.709
	Specificity	0.839	0.821
	PPV	0.857	0.832
	NPV	0.741	0.695
	Decision concordant to consensus	0.750	0.744

ISSN: 1471-2342