Table 4.

Helix angle (HA): Results from initial study [degrees]

HA	N	Mean	SD	Difference	95% Confidence interval		p value
Global
Endo	10	38.9	8.1
Meso	10	3.5	6.9
Epi	10	−34.3	7.6
Slice
Endo layer
Mid	10	40	4.6	Reference
Apical	10	41	7.2	1	−2.6	4.7	0.58
Basal	10	36.3	6	−3.7	−7.4	−0.1	0.044
Meso layer
Mid	10	3	3.2	Reference
Apical	10	4.3	5.3	1.3	−1.5	4	0.37
Basal	10	3.5	4.3	0.5	−2.2	3.2	0.72
Epi layer
Mid	10	−34.4	3.2	Reference
Apical	10	−33.8	6.5	0.6	−3	4.2	0.73
Basal	10	−34.8	4.1	−0.4	−4	3.2	0.82
LV wall
Endo layer
Lateral	10	42.6	5.5	Reference
Anterior	10	45.1	6.6	2.5	−1.6	6.7	0.24
Inferior	10	33.9	8.4	−8.7	−12.8	−4.5	<0.001
Septal	10	34.1	5.2	−8.5	−12.6	−4.3	<0.001
Meso layer
Lateral	10	7.6	4.5	Reference
Anterior	10	7.3	6.1	−0.4	−4.6	3.9	0.87
Inferior	10	−0.2	5.7	−7.8	−12.1	−3.5	<0.001
Septal	10	−0.7	6.9	−8.3	−12.6	−4	<0.001
Epi layer
Lateral	10	−28.7	6	Reference
Anterior	10	−36.9	6.9	−8.3	−13.8	−2.7	0.004
Inferior	10	−32.4	5.4	−3.7	−9.3	1.8	0.19
Septal	10	−39.1	8.2	−10.4	−16	−4.9	<0.001