Table 2.

Comparisons of the amount of alcohol intake during the preceding week converted to grams (g) of pure ethanol, AUDIT-C scores and change in AUDIT-C scores (ΔAUDIT-C) 6 and 12 months after randomization in the brief intervention (BI) group and treatment as usual (TAU) groups

	BI n = 117	TAU n = 117	p-value
6-month follow-up
Alcohol consumption (g), median (IQR)	6.5 (0–141) n = 80	0 (0–72) n = 85	0.544
AUDIT-C, median (IQR)	6 (4–9) n = 109	6 (2–8) n = 104	0.548
ΔAUDIT-C score, median (IQR)	− 1 (− 4 to 0) n = 109	− 2 (− 6 to 0) n = 104	0.144
Abstinent: AUDIT score = 0, n (%)	5 (4) n = 117	13 (11) n = 117	0.052
Hazardous alcohol use according to WHO limitsβ, n (%)	12 (10.3)	8 (6.8)	0.260
Hazardous alcohol use according to AUDIT-C, n (%)γ	75 (64.1)	69 (59.0)	0.420
12-month follow-up
Alcohol consumption (g), median (IQR)	24 (0–146) n = 86	0 (0–96) n = 83	0.157
AUDIT score, median (IQR)	8 (4–14) n = 84	6 (0–10) n = 82	0.054
AUDIT-C, median (IQR)	5 (2–8) n = 84	4 (0–7) n = 82	0.243
ΔAUDIT-C score, median (IQR)	− 3 (− 5 to − 1) n = 84	− 4 (− 7 to − 1) n = 82	0.187
Abstinent: AUDIT score = 0, n (%)	12 (10) n = 117	17 (15) n = 117	0.195
Hazardous alcohol use according to WHO limitsβ, n (%)	13 (11.1)	6 (5.1)	0.105
Hazardous alcohol use according to AUDIT-C, n (%)γ	37 (31.6)	32 (27.4)	0.437

Categorical data are presented as percentages and absolute numbers (n), continuous variables are expressed as medians and interquartile ranges (IQR). Alcohol consumption is presented as converted to grams (g) of pure ethanol. ΔAUDIT-C is the change in AUDIT-C scores from the baseline scores to follow-up scores; IQR, interquartile range; AUDIT-C, Alcohol Use Disorder Identification Test Consumption., ^βSelf-reported alcohol intake during preceding week using WHO limits for hazardous use of alcohol: 140 g pure ethanol per week in women and 280 g pure ethanol per week in men; ^γAUDIT-C > 5 in women, AUDIT-C > 6 in men