Table 3.

Dosage Model at Six-Month Follow Up for Primary Alcohol Use Outcomes Regarding the Past 30 Days

	Alcohol use (N=283)			Drinking frequency (N=283)				Drinking quantity (N=283)				Drunkenness (N=283)				Binge drinking (N=293)
	b	SE	eβ (Odds ratio)	b	SE	β	t	b	SE	β	t	b	SE	β	t	b	SE	β	t
Dosagea	−1.01	.42	.37*	−.47	.13	−.38	−3.60***	−.22	.11	−.18	−1.94†	−.17	.06	−.30	−2.90**	−.15	.06	−.27	−2.40*
Condition	−1.26	.65	.28†	−.78	.23	−.35	−3.35**	−.31	.20	−.14	−1.55	−.23	.10	−.22	−2.17*	−.16	.11	−.16	−1.41
Baseline	2.91	.46	18.36***	.52	.07	.41	7.69***	.62	.05	.61	12.78***	.61	.07	.46	8.74***	.27	.06	.24	4.35***
Teen gender	−.16	.41	.85	−.05	.12	−.02	−.38	−.03	.10	−.02	−.32	−.08	.05	−.08	−1.46	−.06	.06	−.06	−1.01
Teen age	0.59	.41	1.80	.13	.12	.06	1.07	−.03	.11	−.01	−.24	.02	.05	.01	.28	.01	.06	.01	.13
Teen White	−.40	.44	.67	−.15	.13	−.06	−1.16	−.02	.11	−.01	−.22	.07	.06	.06	1.21	.08	.06	.07	1.33
Inverse Mills Ratio	--	--	--	−.44	1.78	−.01	−.25	2.51	1.50	.08	1.67†	1.26	.79	.08	1.59	2.35	.85	.15	2.76**

Note. For the condition variable, 1 = control, 0 = experimental condition. For the alcohol use model, the Inverse Mills Ratio was dropped from that model because of computational difficulties.

^aDosage effect sizes (Cohen’s d): alcohol use d = −.55 frequency d = −.43, quantity d = −.23, drunkenness d = −.35, binge drinking d = −.28

^† p < .10

^*p < .05

^**p < .01

^***p < .001