Table 5.

Sensitivity analysis excluding pre- and post-test studies.

Indicator	Hedges’g	SE	95% CI	p	Heterogeneity	τ2_level3
Main effect analysis	0.511	0.082	[0.346, 0.677]	<0.001	64.04 (df = 36, p = 0.003)	0.0574
Sensitivity analysis	0.552	0.115	[0.310, 0.795]	0.0001	29.31 (df = 18, p = 0.045)	0.0356