. Author manuscript; available in PMC: 2014 Aug 1.

Published in final edited form as: Subst Use Misuse. 2014 Apr 7;49(10):1241–1249. doi: 10.3109/10826084.2014.891619

TABLE 4.

Summary of hierarchical multiple regression analysis predicting alcohol-related problems

Step	Predictor	B	β	SE (B)	R ²	Δ R ²
CEOA entered prior to CEQ
Step 1	Gender	−.74	−.04	1.23	−.003^b
Step 2	Alcohol use	.54^*	.62	.05	.358	.363^*
Step 3	CEOA				.479	.138^*
	Sociability	.17	.11	.12
	Tension reduction	−.39	−.10	.23
	Liquid courage	−.31	−.16	.22
	Sexuality	.08	.03	.19
	Impairment^a	.10	.07	.11
	Risk and aggression	.55^*	.28	.23
	Self-perception	.46^*	.16	.21
Step 4	CEQ				.513	.042^*
	Positive effects	.14	.12	.07
	Acute negative effects	.16	.11	.08
	Mood effects	−.46^*	−.26	.13
	Withdrawal symptoms	.09	.09	.07
CEQ entered prior to CEOA
Step 1	Gender	−.74	−.04	1.23	−.003
Step 2	Alcohol use	.54^*	.62	.05	.358	.363^*
Step 3	CEQ				.409	.062^*
	Positive effects	.15	.13	.08
	Acute negative effects	.29^*	.20	.08
	Mood effects	−.33^*	−.19	.14
	Withdrawal symptoms	.07	.07	.08
Step 4	CEOA				.513	.118^*
	Sociability	.14	.09	.12
	Tension reduction	−.41	−.11	.22
	Liquid courage	−.27	−.14	.22
	Sexuality	.04	.02	.19
	Impairment^a	.03	.02	.11
	Risk and aggression	.55^*	.28	.23
	Self-perception	.60^*	.21	.21

Note. Gender: 1 = male, 2 = female; CEOA, comprehensive effects of alcohol; CEQ, caffeine expectancy questionnaire; CAB, caffeinated alcoholic beverage.

Significant at p < .025 (.05/2) following Bonferroni correction.

Impairment = Cognitive and Behavioral Impairment.

The R² reported is the adjusted R².