Table 3.

Summary of Generalized Linear Model Predicting First Semester College Alcohol Use

Variable	b	SE b	IRR	χ 2	R2a
Step 1				1042.65***	.44
Alcohol use	0.77	0.03	2.16***
Male gender	-0.04	0.06	0.96
Sensation seeking	0.23	0.03	1.26***
Impulsivity	0.003	0.03	1.00
PAC	-0.05	0.03	0.95
Step 2				1052.46***	.45
Alcohol use	0.78	0.03	2.17***
Male gender	-0.05	0.06	0.95
Sensation seeking	0.22	0.03	1.25***
Impulsivity	0.00	0.03	1.00
PAC	-0.06	0.03	0.94*
Sensation seeking × PAC	0.09	0.03	1.09**
Impulsivity × PAC	0.004	0.03	1.00

Note. Generalized linear model using negative binomial distribution and log link. All predictor variables assessed senior year of high school. PAC =Perceived awareness and caring. Δχ²(2) = 9.77, p = .008.

^aCragg and Uhler R².

^*p < .05.

^**p < .01.

^***p < .001.