Table 3.

Hierarchical Multiple Regression Predicting Drinking, Alcohol-Related Consequences, and Symptoms of Physical Dependency From Perceived Pledge Class Drinking Norms and House Attitudes

Variable	Alcohol-related consequences			Symptoms of physical dependency
	β	$R_{\text{change}}^2$	$R_{\text{total}}^2$	β	$R_{\text{change}}^2$	$R_{\text{total}}^2$
Baseline
1. Group assignment	.00	.23***	.22***	.05	.32***	.32***
Gender (G)	−.04			.03
Baseline drinking (D)	.46***			.57***
2. Perceived pledge class drinking norm (DNRF)	−.08	.00	.23***	.02	.00	.32***
3. House acceptability of drinking (HAQ)	.15***	.02***	.25***	.22***	.05***	.37***
4. G × D	.11*	.01*	.26***	.11*	.00	.37***
G × DNRF	−.05	.00	.26***	−.10*	.01*	.38***
G × HAQ	.01	.00	.26***	−.06	.00	.38***

	Drinking			Alcohol-related consequences			Symptoms of physical dependency
	β	$R_{\text{change}}^2$	$R_{\text{total}}^2$	β	$R_{\text{change}}^2$	$R_{\text{total}}^2$	β	$R_{\text{change}}^2$	$R_{\text{total}}^2$
One-year follow-up
1. Group assignment	−.01	.29***	.29***	.05	.16***	.16***	.07	.17***	.17***
Gender (G)	−.17***			.05			−.03
Baseline drinking (D)	.46***			.41***			.40***
2. Perceived pledge class drinking norm (DNRF)	.04	.00	.29***	−-.09	.01	.17***	.03	.00	.17***
3. House acceptability of drinking (HAQ)	.11**	.02**	.31***	.15**	.02**	.19***	.15***	.02***	.19***
4. G × D	−.01	.00	.31***	.20***	.02**	.21***	.15*	.00	.21***
G × DNRF	−.05	.00	.31***	−.04	.00	.21***	−.13*	.01*	.21***
G × HAQ	−.02	.00	.31***	−.08	.00	.21***	−.06	.00	.21***

Note. Ns = 571 (baseline) and 396 (follow-up). Variables were entered in four steps in the order listed. Gender: male = 0, female = 1. Group assignment: control condition house = 0, intervention condition house = 1. Baseline drinking = average total drinks per week during the past 3 months. β = standardized regression weights; DNRF = perceived pledge class drinking norm based on the Drinking Norms Rating Form; HAQ = House Acceptability Questionnaire.

^*p < .05.

^**p < .01.

^***p < .001.