Table 3.

Results of moderation analyses of demographic variables

Moderator	n	m	k	b	SEb	95% CIb	r	z	SEz	95% CIz	p
Age (categorical)
< 25 years old	14	15	49				-0.05	-0.08	0.07	[-0.19, 0.08]	0.428
> 25 years old	16	17	84				-0.03	-0.03	0.04	[-0.12, 0.05]	0.420
Age (continuous)	29	32	133	0.002	0.003	[-0.004, 0.008]					0.478
Gender proportion	38	42	154	0.16	0.18	[-0.19, 0.52]					0.367
Sample Source
School	10	12	36				-0.01	-0.01	0.09	[-0.19, 0.16]	0.880
Mixed	2	2	5				-0.01	-0.01	0.08	[-0.18, 0.15]	0.861
Community	25	27	113				-0.08	-0.08	0.03	[-0.15, -0.01]	0.016

n = number of studies, m = number of samples, k = number of effect sizes, z = Fisher’s z, r = Pearson correlation coefficient, b = slope coefficient, SE = standard error, CI = confidence interval