Table 2.

Summary of Random-Effects Categorical Analysis Results for the Prevalence of ASD Traits in GD/GI Individuals

Moderators	Q	df	p	Tau2		k	g	SE	95% CI	p
Age group	1.71	1	0.191	0.30
Child & adolescent						3	1.04	0.33	0.39, 1.68	0.002
Adult						8	0.54	0.20	0.15, 0.92	0.006
Control group	0.49	1	0.482	0.30
Secondary						6	0.56	0.23	0.12, 1.01	0.013
Primary						5	0.80	0.25	0.31, 1.30	0.002
Study design	1.31	1	0.253	0.19
Clinical						6	0.57	0.19	0.21, 0.93	0.002
Population						4	0.90	0.22	0.46, 1.34	<0.001

Note. Study codes are presented in Table S4. Control group = source of data; Q = Heterogeneity test; df = Degrees of freedom; p = Probability value; Tau² = Pooled variance component; k = number of studies included in each group; g = Hedges’g Standardized bias-corrected effect size; SE = Standard error; 95% CI = 95% Confidence intervals.