Table 2.

The effect size analysis of the fixed effect and random effect model for porcine epidemic diarrhea virus (PEDV) vaccine efficacy. The effect size was converted into Hedges’ g for interpretation in this study, and is classified into small effect size (<0.3), medium effect size (0.3 to 0.8), and large effect size (≥0.8).

Outcome	Effect Model	Number	Effect Sizes	Standard Error	95% CI	z-Value
Fecal score	Fixed	12	1.907	0.162	1.589~2.224	11.775 *
	Random	12	2.421	0.402	1.634~3.208	6.028 *
Survival rate	Fixed	13	3.474	0.381	2.727~4.222	9.109 *
	Random	13	3.700	0.455	2.809~4.590	8.138 *

CI: confidence interval. * p < 0.05