Table 2.

Univariate Meta-regression Analyses Examining Possible Sources of Between-Study Heterogeneity Among Adolescents in Juvenile Detention

Variable	Psychotic Illnesses			Major Depression			ADHD			Conduct Disorder			PTSD
	β	SE	p	β	SE	p	β	SE	p	β	SE	p	β	SE	p
Year of publication: ≤2006 vs >2006	−.005	.004	.22	−.072	.037	.06	.081	.035	.028∗	.194	.066	.005∗	−.029	.039	.47
Gender: male vs female	−.004	.005	.42	−.144	.032	< .001∗	.002	.040	.96	.028	.079	.72	−.102	.037	.01∗
Mean age (continuous)	−.003	.004	.53	−.033	.024	.18	.003	.027	.91	.124	.047	.01	−.014	.027	.60
Mean age: ≤15 vs >15 years	−.005	.007	.46	−.048	.073	.52	−.022	.079	.79	.182	.163	.27	−.007	.050	.89
Study size (continuous)	.000	.000	.97	.000	.000	.69	.000	.000	.65	.000	.000	.38	.000	.000	.44
Study size: ≤250 vs >250 adolescents	.005	.005	.26	−.022	.045	.63	.002	.040	.96	−.001	.082	.99	.031	.038	.43
Study origin: USA vs elsewhere	.003	.005	.52	.044	.037	.25	−.029	.039	.46	−.094	.073	.21	−.016	.038	.67
Instrument: DISC vs other	−.005	.005	.33	−.051	.040	.21	−.057	.041	.17	−.218	.071	.004∗	−.071	.038	.07
Diagnostic criteria: ICD vs DSM	.006	.005	.20	.034	.074	.64	.008	.080	.92	−.123	.122	.32	−.050	.053	.36
Interviewer: psychiatrist vs nonpsychiatrist	−.006	.005	.19	−.050	.042	.25	−.012	.041	.78	.118	.073	.11	−.004	.045	.93
Sampling strategy: stratified/nonstratified vs consecutive/complete	−.003	.005	.53	−.021	.040	.60	−.010	.042	.81	.099	.080	.22	−.030	.039	.45
Study quality (continuous)	.003	.002	.17	−.029	.013	.04∗	.007	.018	.71	.048	.033	.16	−.004	.017	.81
Study quality: high-quality studies vs low- and medium-quality studies	.007	.004	.12	−.756	.036	.04∗	−.013	.041	.76	.044	.073	.55	−.003	.039	.93

Note: ADHD = attention-deficit/hyperactivity disorder; DISC = Diagnostic Interview Schedule for Children; PTSD = posttraumatic stress disorder.

^∗p < .05.