Table 1. Demographic and clinical data for healthy controls and patients.

ADS, Alcohol Dependence Scale; FTND, Fagerstroem Test for Nicotine Dependence.

Patient group, mean (SE)
	Control (n = 35)	AUD cohort (n = 49)	Statistics	P value
Demographical variables
Age, mean (SE), year	41.8 (1.6)	47.5 (1.4)	t82 = 2.636	0.010
Educational attainment, no. of participants
No graduation	0	1	Χ23 = 9.054	0.029
Primary school	5	16
Secondary school	5	13
Attended college or higher	25	19
Substance use patterns
Ethanol intake (mean of last 90 days), g/day	6.2 (0.9)	203.6 (27.8)	t82 = 5.980	<0.001
ADS (total score)	2.1 (0.4)	15.4 (0.9)	t82 = 11.055	<0.001
Smoking
No. of participants responding yes/no	4:31	32:17	Χ21 = 24.200	<0.001
FTND total score, mean (SE)	4.8 (1.9)	6.1 (2.1)	t35 = 1.123	0.269