Table 1.

Explained variance of individual AUDIT items to AUDIT-10 score and item inclusion in common established shortened AUDIT versions

				Established AUDIT Variations
Item no.	The AUDIT questions	AUDIT Domain1	Explained variance of total AUDIT-10 score (R2)	AUDIT-10	AUDIT-C	AUDIT-3	FAST	AUDIT-4
1	How often do you have a drink containing alcohol?	C	30.7%	■	■			■
2	How many drinks containing alcohol do you have on a typical day when you are drinking?	C	30.0%	■	■			■
3	How often do you have 6 or more drinks on one occasion?	C	47.1%	■	■	■	■	■
4	How often during the last year have you found that you were not able to stop drinking once you had started?	D	48.8%	■
5	How often during the last year have you failed to do what was normally expected of you because of alcohol?	D	44.6%	■			■
6	How often during the last year have you needed a first drink in the morning to get yourself going after a heavy drinking session?	D	31.3%	■
7	How often during the last year have you had a feeling of guilt or remorse after drinking?	H	39.6%	■
8	How often during the last year have you been unable to remember what happened the night before because of your drinking?	H	45.5%	■			■
9	Have you or someone else been injured because of your drinking?	H	28.9%	■
10	Has a relative, friend, doctor, or other health care worker been concerned about your drinking or suggested you cut down?	H	34.5%	■			■	■
			Score range:	1-40	1-12	0-4	0-16	1-16

¹ AUDIT domains are: C, alcohol consumption; D, alcohol dependence; H, harmful alcohol use.