Table 3.

Mixed model analysis of variance results for outcomes

Source	Weekly drinking quantity			Peak drinking quantity		Frequency of drinking to intoxication		Alcohol-related consequences
Random effects
(variance component estimate)
Student		6.72			3.57		0.19		5.33
Residual		5.27			2.73		0.26		4.46
ICC (student)		56%			57%		42%		54%
Fixed effects	F		Pr > F	F	Pr > F	F	Pr > F	F		Pr > F
Group	2.14		.15	0.84	.36	0.58	.45	0.14		.71
Time	0.13		.72	16.41	<.001**	19.70	<.001**	15.43		.01**
Group x Time	9.92		.01**	8.33	.01**	1.99	.16	0.20		.65
Risk status	181.07		<.001**	335.48	<.001**	189.14	<.001**	35.74		<.001**
Group x Risk Status	1.60		.21	2.54	.11	1.16	.28	0.06		.80
Time x Risk Status	0.10		.76	28.25	<.001**	12.01	.01**	8.58		.00**
Group x Time x Risk Status	8.86		.01**	7.19	.01**	3.81	.05*	0.23		.63
Specific comparisons	t		Pr > t	t	Pr > t	t	Pr > t	t		Pr > t
High-risk status: Group x Time	-3.50		.01**	-3.19	.01**	-1.93	.06§	0.53		.60
Low-risk status: Group x Time	-0.18		.86	-0.21	.88	0.55	.58	-0.03		.97

Note: ICC = intraclass correlation coefficient.

^§p <.06; *p <.05; **p <.01.