Table 4.

AUC for direction and layer of strain versus >50 % transmurality of scar

Direction and layer of strain	AUC	Sens (%) at spec = 80 %	Strain cut-off value	Scar	Control	p-value
Radial subendocardial strain SA	0.60	27	N/A	4 ± 10	9 ± 11	0.002
Radial epicardial strain SA	0.69	45	N/A	9 ± 13	19 ± 14	<0.001
Radial transmural strain SA	0.66	39	N/A	7 ± 11	14 ± 13	<0.001
Radial transmural radial strain LA	0.67	40	N/A	4 ± 11	12 ± 13	<0.001
Circumferential subendocardial strain	0.94	95	−17	−9 ± 6	−19 ± 3	<0.001
Circumferential epicardial strain	0.92	91	−14	−7 ± 5	−16 ± 4	<0.001
Circumferential transmural strain	0.93	94	−15	−8 ± 5	−17 ± 4	<0.001
Longitudinal transmural strain	0.80	66	−10	−7 ± 7	−12 ± 4	<0.001

Strain for segments with transmurality in excess of 50 % (80 segments) is compared with strain in 356 control segments, regardless of location. AUC is presented together with sensitivity at 80 % specificity and the corresponding cut-off value for strain, when applicable. For strain with AUC less than 0.70, a cut-off value was not calculated, N/A = Not Applicable