ALCOHOL-RELATED INJURY AND DRIVING WHILE INTOXICATED: A RISK FUNCTION ANALYSIS OF TWO ALCOHOL-RELATED EVENTS IN THE 2000 AND 2005 NATIONAL ALCOHOL SURVEYS

. Author manuscript; available in PMC: 2011 May 1.

Published in final edited form as: Am J Drug Alcohol Abuse. 2010 May;36(3):168–174. doi: 10.3109/00952991003793851

Volume (average # of drinks/month) (Level 1)	Heavy drinking Threshold Measure (Level 2)	Heavy drinking Threshold Measure (Level 3)	N	Driving while intoxicated last year (%)	Average volume (# drinks/month)
≤2 per month	-	-	1918	0.2	1

(2 – 3] ^a per month^***	Never 5+	-	573	0.9	3
	Any 5+	-	84	8.0	3

(3–3.5]^a per month	-	-	255	0.2	3

(3.5 – 6] ^a per month^***	Never 5+	-	637	0.7	5
	Any 5+	-	176	8.2	5

(6 – 17.5] ^a per month^***	Never 5+	-	1127	2.6	11
	Any 5+^*	Never 8+	337	8.0	11
		Any 8+	239	16.0	12

(17.5 – 30] ^a per month^***	5+ ≤ once last year	-	557	4.9	23
	5+ > once last year	-	358	17.0	24

(30 – 52.5] ^a per month^***	Never 5+	-	427	5.6	40
	Any 5+^*	12+ ≤ once last year	393	20.5	40
		12+ > once last year	95	34.3	42

(52.5 – 180] ^a per month^***	Never 5+	-	366	6.1	82
	5+ < monthly	-	295	20.2	82
	5+ ≥ monthly^**	8+ ≤ once last year	114	18.9	93
		8+ >once, < weekly	257	39.1	93
		8+ ≥ weekly	179	28.3	106

>180 per month^***	8+ ≤ once last year	-	44	11.9	242
	8+ > once last year	-	225	39.2	371

(a–b] means the volume >a, but ≤ b

p<0.05,

^**

p<0.01,

^***

p<0.001