Table 1.

Characteristics of the study groups: mean±SD / frequency count

	Control (n=99)	AUD (n=154)	p-value*
N (men / women)	58 / 41	111 / 43	0.03
Age (years)	50.9 ± 13.3	49.8 ± 10.5	0.50
Handedness (Right / Center)	87 / 12	133 / 21	0.73
Ethnicity♩ (Caucasian / African American / Other)	50 / 24 / 25	88 / 60 / 5	< 0.0001
Body Mass Index	26.4 ± 4.7	27.2 ± 4.6	0.18
Education (years)	15.8 ± 2.5	13.1 ± 2.2	< 0.0001
Socioeconomic Status#	28.0 ± 13.3	43.4 ± 14.8	< 0.0001
Beck Depression Index (BDI)	3.1 ± 3.8	10.6 ± 8.3	< 0.0001
National Adult Reading Test (NART)	112.0 ± 8.4	106.3 ± 9.1	0.0005
Dementia Rating Scale (DRS)	139.8 ± 2.6	136.2 ± 5.0	< 0.0001
AUD onset age	-	24.5 ± 9.2	-
Months since last drink	-	8.1 ± 21.2	-
Lifetime alcohol consumption (kg)	35.8 ± 58.5	1301.6 ± 1090.8	< 0.0001
Smoker (never / past / current)	89 / 2 / 5	45 / 25 / 83	< 0.0001
Nicotine (daily)	0.9 ± 2.7	6.3 ± 7.1	< 0.0001

^*t-tests used on continuous variables (e.g., age); χ2 used on nominal variables (e.g., handedness)

^♩self-defined, where Other = Native American, Asian, or Islander

^#lower score = higher status