Table 1.

Baseline characteristics of IVR-BI study participants^a

	Control (N = 851)	IVR-BI (N = 854)	P-value
% Female	53	52	0.48
Marital status
% Single	31	34	0.20
% Married/civil union	56	55
% Divorced/separated	11	8
% Widowed	2	3
% White	94	96	0.11
Age
% 18–29	20	19	0.96
% 20–44	24	25
% 45–64	39	40
% 65+	16	16
Education
% ≤High school diploma or GED	32	31	0.77
% Some college/associates degree	10	11
% Bachelor's degree or greater	59	59
SASQ score median (IQR)	5 (2–10)	5 (2–12)	0.35
% AUD based on CIDI-SAM	29	28	0.84
% Reporting heavy episodic drinking in the past 30 days	39	36	0.34
Number of drinks per week (mean ± SD)	8.1 ± 11.4	7.6 ± 9.4	0.36
Number of drinking days per week (mean ± SD)	2.9 ± 2.4	2.9 ± 2.3	0.90
Number of drinks per drinking day (mean ± SD)	2.7 ± 2.1	2.5 ± 1.7	0.17

^asubjects completing baseline assessment of alcohol use.