Table 4.

Hierarchical regression models predicting alcohol problems at baseline (cross-sectional model) and 1-month follow-up (prospective model).

	Variable	Cross-sectional Model DV: BL alcohol problems			Prospective Model DV: 1mo alcohol problems
		β	p	Adj. R2	β	p	Adj. R2
Step 1	Gender	0.04	0.34	< 0.001	0.004	0.92	0.20
	Intervention group	–	–	–	0.01	0.73	–
	Drinks per week	–	–	–	0.20	< 0.001	–
	Alcohol problems	–	–	–	0.34	< 0.001	–
Step 2	Gender	0.06	0.11	0.10	< 0.001	0.99	0.22
	Intervention group	–	–	–	0.02	0.65	–
	Drinks per week	–	–	–	0.14	0.002	–
	Alcohol problems	–	–	–	0.31	< 0.001	–
	Descriptive norms	0.24	< 0.001	–	0.10	< 0.05	–
	Injunctive norms	0.11	0.02	–	0.07	0.15	–
Step 3	Gender	0.06	0.20	0.11	−0.001	0.98	0.21
	Intervention group	–	–	–	0.05	0.28	–
	Drinks per week	–	–	–	0.05	0.33	–
	Alcohol problems	–	–	–	0.32	< 0.001	–
	Descriptive norms	0.27	< 0.001	–	0.09	0.10	–
	Injunctive norms	0.11	0.05	–	0.09	0.10	–
	Attitude moderate	−0.03	0.52	–	−0.11	0.02	–
Step 4	Gender	0.07	0.12	0.12	0.01	0.81	0.22
	Intervention group	–	–	–	0.04	0.33	–
	Drinks per week	–	–	–	−0.002	0.97	–
	Alcohol problems	–	–	–	0.32	< 0.001	–
	Descriptive norms	0.25	< 0.001	–	0.07	0.21	–
	Injunctive norms	0.10	0.07	–	0.07	0.19	–
	Attitude moderate	0.004	0.93	–	−0.07	0.18	–
	Attitude heavy	0.10	0.07	–	0.17	0.001	–

Note. 1mo = 1 month. Attitude heavy = attitude toward heavy drinking. Attitude moderate = attitude toward moderate drinking. BL = baseline. Gender was coded men = 0 and women = 1.