Table 3.

Estimated Presanction (Baseline) Values, Intervention Effect, and Postintervention Change With 95% Confidence Intervals for Six Outcome Variables, by Condition

	Alcohol 101 Plus			Brief motivational intervention
Factor	Lower bound	Estimate	Upper bound	Lower bound	Estimate	Upper bound
Men
Drinks per typical week
Presanction drinkinga	14.64	17.04	18.70	11.71	15.12	17.24
Intervention effectb	−3.73	−0.96	2.54	−3.11	−1.25	0.93
Postintervention changec	0.23	0.36	0.48	0.23	0.36	0.48
Drinks per drinking day
Presanction drinkinga	4.68	5.44	6.00	4.33	4.80	5.30
Intervention effectb	−0.93	−0.27	0.37	−0.62	−0.16	0.26
Postintervention changec	0.02	0.05	0.09	0.02	0.05	0.09
Drinks per heaviest week
Presanction drinkinga	21.24	25.01	27.77	19.13	22.00	25.31
Intervention effectb	−6.06	−1.98	2.37	−6.79	−3.52	−1.14
Postintervention changec	0.39	0.55	0.75	0.39	0.55	0.75
Peak blood alcohol concentration
Presanction drinkinga	.148	.172	.194	.099	.130	.153
Intervention effectb	−.039	−.012	.017	−.045	−.022	−.004
Postintervention changec	.001	.002	.003	.001	.002	.003
Heavy drinking frequency
Presanction drinkinga	5.46	6.63	7.95	4.74	5.48	6.57
Intervention effectb	−2.72	−0.85	1.16	−1.93	−1.09	−0.35
Postintervention changec	0.15	0.23	0.29	0.15	0.23	0.29
Rutgers Alcohol Problems Index (RAPI) total score
Presanction drinkinga	4.24	4.95	5.63	3.33	4.55	5.62
Intervention effectb	−1.43	0.04	1.11	−1.79	−0.43	0.29
Postintervention changec	0.06	0.12	0.17	0.06	0.12	0.17
Women
Drinks per typical week
Presanction drinkinga	10.44	12.70	14.86	8.87	12.22	14.57
Intervention effectb	−2.79	−0.76d	1.51	−6.74	−4.76d	−2.36
Postintervention changec	0.23	0.36	0.48	0.23	0.36	0.48
Drinks per drinking day
Presanction drinkinga	3.33	3.85	4.40	3.34	3.84	4.23
Intervention effectb	−0.35	0.20d	0.74	−0.96	−0.48d	−0.01
Postintervention changec	0.02	0.05	0.09	0.02	0.05	0.09
Drinks per heaviest week
Presanction drinkinga	13.51	17.54	20.42	13.65	16.96	19.72
Intervention effectb	−3.42	−0.59d	3.43	−9.13	−6.39d	−3.89
Postintervention changec	0.39	0.55	0.75	0.39	0.55	0.75
Peak blood alcohol concentration
Presanction drinkinga	.155	.175	.188	.144	.167	.188
Intervention effectb	−.038	−.014d	.004	−.055	−.039d	−.018
Postintervention changec	.001	.002	.003	.001	.002	.003
Heavy drinking frequency
Presanction drinkinga	3.66	4.87	5.80	3.91	5.58	6.65
Intervention effectb	−1.32	−0.18d	0.93	−3.64	−2.74d	−1.62
Postintervention changec	0.15	0.23	0.29	0.15	0.23	0.29
Rutgers Alcohol Problems Index (RAPI) total score
Presanction drinkinga	4.00	5.08	6.40	3.25	4.37	5.56
Intervention effectb	−2.17	−0.89	−0.23	−2.55	−1.73	−1.02
Postintervention changec	0.06	0.12	0.17	0.06	0.12	0.17

Note. Estimates are significantly different from zero if the 95% confidence interval does not contain zero.

^aAverage presanction values per group, holding readiness-to-change and AUDIT status constant.

^bExpected change in drinking from presanction month to 1-month postintervention follow-up.

^cExpected monthly drinking change from 1 month to 12 months.

^dA significant difference exists at the .05 level between the Alcohol 101 and BMI groups.