Table 2.

Inter-observer correlation for LV echocardiographic indices.

Characteristics	Mean Difference* (Range)	Correlation coefficient (R)	P-Value
End-diastolic diameter, systole	−0.05 (−0.610.29)	0.91	<0.001
End-diastolic diameter, diastole	−0.09 (−0.550.81)	0.97	<0.001
Posterior wall thickness, systole	0.00 (−0.310.46)	0.89	<0.001
Posterior wall thickness, diastole	0.02 (−0.230.41)	0.83	<0.001
Thickness-dimension ratio	0.00 (−0.04-0.07)	0.90	<0.001
End systolic wall stress	0.40 (−24.60-25.10)	0.85	<0.001
LV Mass	0.12 (−12.30-18.60)	0.94	<0.001
Isolvolumic relaxation time	2.55 (−55.00-38.00)	0.76	<0.001
Isovolumic contraction time	1.81 (−44.00-27.00)	0.78	<0.001
Ejection time	1.62 (−46.00-34.80	0.88	<0.001
Myocardial performance index	2.11 (−8.20-12.30)	0.82	<0.001
E wave	0.03 (−0.07-0.44)	0.95	<0.001
A wave	0.01 (−0.19-0.11)	0.96	<0.001
E/A ratio	0.02 (−0.62-0.90)	0.93	<0.001

^*Calculated as the mean difference between values obtained from echocardiographic reading at the clinical site (COH or CHLA) and the core cardiology lab (UM).