Table 3.

The Individual Correlation Coefficient from Each Study and the Calculated 95% Confidential Interval (CI).

Study	Number of patients	Time_interval	Correlation coefficient
			|r|	CI
2D GLS
TV,2007	30	<1 day	0.77	[0.57, 0.88]
CE,2010	61	>1 month	0.68	[0.52, 0.80]
NM, 2011	163	<1 day	0.74	[0.66,0.80]
AT,2013	58	<1 day	0.67	[0.50, 0.79]
MG, 2013	39	>1 month	0.62	[0.38,0.78]
LB, 2014	41	>1 month	0.61	[0.37,0.77]
ML, 2015	30	<5 day	0.60	[0.31,0.79]
3D GLS
DH,2012	25	<1 day	0.45	[0.07,0.72]
AT, 2013	58	<1 day	0.42	[0.18,0.61]
WZ, 2013	26	<1 day	0.86	[0.71, 0.94]
MFA,2016	71	<1 day	0.29	[0.06, 0.49]