Table 2.

Distribution of Drinking Patterns

Variable	N	Mean Drinks per Week	Sample Proportion
Quantity–Frequency(QF)-Based Drinking Patterns
Abstainers	3,945	0	0.276
			(0.447)
Infrequent light drinkers	4,159	0.122	0.291
		(0.130)	(0.454)
Infrequent medium drinkers	1,520	0.299	0.106
		(0.232)	(0.308)
Infrequent heavy drinkers	780	0.654	0.055
		(0.520)	(0.227)
Frequent light drinkers	1,596	2.970	0.112
		(2.351)	(0.315)
Frequent medium drinkers	1,047	4.782	0.073
		(3.350)	(0.261)
Frequent heavy drinkers	901	9.354	0.063
		(7.771)	(0.243)
Daily light drinkers	141	10.475	0.010
		(3.512)	(0.099)
Daily medium drinkers	104	17.5	0.007
		(3.517)	(0.085)
Daily heavy drinkers	102	37.059	0.007
		(16.820)	(0.084)
AUDIT-Based Drinking Patterns
Abstainers	2,497	0	0.278
			(0.448)
Low-risk drinkers	5,517	1.136	0.613
		(1.921)	(0.487)
Zone I drinkers	909	10.302	0.101
		(8.401)	(0.301)
Zone II drinkers	71	26.989	0.008
		(22.192)	(0.089)

Note: Standard deviation shown in parentheses.