Table 3.

Drinking Outcomes across Assessments for Participants Abstinent at the End of CBT

		Assessment			ES	group	time	group x time
		2-week	2-month	4-month	ES	p-value	p-value	p-value
Drinking days per week	ATIVR	0.1 ± 0.2	0.1 ± 0.2	0.1 ± 0.2	.46	.06	.21	.09
Drinking days per week	Control	0.1 ± 0.1	0.6 ± 0.1	0.5 ± 0.2
Drinks per week	ATIVR	0.3 ± 1.3	0.1 ± 1.3	0.4 ± 1.3	.43	.09	.16	.12
Drinks per week	Control	0.3 ± 1.2	3.8 ± 1.2	3.5 ± 1.2
Drinks per drinking day	ATIVR	2.6 ± 1.9	3.5 ± 1.9	4.3 ± 1.6	.11	.57	.36	.80
Drinks per drinking day	Control	3.4 ± 1.3	5.3 ± 1.1	4.8 ± 1.1
Percent reported drinking (last 30 days)	ATIVR	N/A	13 ± 6	10 ± 5^*	.51	.04	.71	.63
Percent reported drinking (last 30 days)	Control	N/A	29 ± 7	30 ± 7
Percent reported Drinking Heavily^b (last 30 days)	ATIVR	N/A	3 ± 3	0 ± 0^*	.61	N/A^a	N/A^a	N/A^a
Percent reported Drinking Heavily^b (last 30 days)	Control	N/A	13 ± 6	16 ± 6

Note. Tabled values are least square means ± standard error based on analyses of covariance, unless otherwise noted. CBT = Cognitive Behavioral Therapy. ATIVR = Automated Therapeutic Interactive Voice Response. ES = Effect Size at 4-month assessment, reported in Cohen’s d.

GEE model did not converge due to no subjects reporting excessive drinking in ATIVR group at 4-months, significance based on Bonferroni adjusted chi-square tests within time point.

Drinking heavily refers to meeting National Institute on Alcohol Abuse and Alcoholism threshold for high-risk drinking (5+/4+ drinks in a day for men/women).

p <.05 for ATIVR vs. Control