International Journal of Educational Technology in Higher Education

Table 6 Meta-regression results for the learning achievement of response from sample size

From: Are open educational resources (OER) and practices (OEP) effective in improving learning achievement? A meta-analysis and research synthesis

Model		Coefficient	Standard Error	95% lower	95% upper	Z-value	Two-sided p-value
Intercept		0.01	0.09	− 0.19	0.17	− 0.13	0.90	Q^b = 3.09, df = 1, p = 0.08
Sample size^a	1 = Small	0.28	0.16	− 0.03	0.58	1.76	0.08	Q^b = 3.09, df = 1, p = 0.08

^a0 = Large as the reference group
^bThe Q statistics are for the set of variables of sample size

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