Functional measurements based on feature tracking of cine magnetic resonance images identify left ventricular segments with myocardial scar

Table 4 P-values from comparisons of ROC Areas and sensitivities at 80% specificity

	Radial strain	Radial displacement	Radial velocity	Longitudinal strain	Longitudinal velocity	Longitudinal displacement
Composite	0.160 (0.457)	0.001 (0.072)	<0.001 (0.093)	<0.001 (<0.001)	<0.001 (<0.001)	<0.001 (<0.001)
Radial strain	-	0.302 (0.567)	0.015 (0.417)	<0.001 (<0.001)	<0.001 (<0.001)	<0.001 (<0.001)
Radial displacement		-	0.011 (0.780)	<0.001 (0.004)	<0.001 (<0.001)	<0.001 (<0.001)
Radial velocity			-	0.001 (0.012)	<0.001 (<0.001)	<0.001 (<0.001)
Longitudinal strain				-	<0.001 (0.227)	<0.001 (0.021)
Longitudinal velocity					-	<0.001 (0.114)

P-values for differences between the ROC areas and, within parenthesis, for sensitivities at 80% specificity using an exact statistical method corresponding to McNemar's paired Chi2 modification.