Table 2.

Overall and subgroup effect size estimates

	K1	K2	d	SE	df	p	95% CI
Overall Effect Size	120	22	.23 * a	.05	16.70	.000	.12, .35
Control Type
Inactive Control	54	12	.31 *	.07	8.48	.003	.14, .48
Active Control	66	10	.14	.07	7.10	.074	−.02, .29
Comparing more fully adapted CAIs with partially adapted (translated) active control	59	8	.17	.08	5.46	.098	−.04, .38
Outcome
Alcohol Use	69	14	.25 *	.08	10.56	.008	.08, .43
Illicit Drug Use	27	5	.35	.15	2.02	.146	−.30, 1.00
Unspecified Substance Use	9	4	.22	.10	2.09	.139	−.17, .62
Consequences	15	4	.02	.04	2.57	.593	−.11, .16

Note. K1=number of effect sizes, K2=number of studies, d=small sample corrected Hedge’s g, SE=standard error, df=degree of freedom, CI=confidence interval, SBI= Screening and Brief Intervention, SBIRT=Screening, Brief Intervention, and Referral to Treatment.

^*p <.05 when df >= 4, * p <.01 when df < 4.

^aQ[df = 119]= 224.42, p < .001, I2= 46.97%