Table 3.

Computed Random effect size, CI95 and Q value (Heterogeneity test).

Model	Effect size and 95% confidence interval				Test of null (2-Tail)			Heterogeneity
Model	Number Studies	Point estimate	Lower Limit	Upper Limit	Z-value	P-value	Q-value	df (Q)	P-value
Random	3	0.726	0.079	1.373	2.199	0.028	2.652	2	0.196