. Author manuscript; available in PMC: 2010 May 1.

Published in final edited form as: Accid Anal Prev. 2009 Feb 24;41(3):522–530. doi: 10.1016/j.aap.2009.02.004

Table 2.

Alcohol in Crash and Control Cases by Weekday, Injury Level, and Hour of Crash

			4 p.m. – 7 p.m.		7 p.m. – 9 p.m.		9 p.m. – midnight		midnight – 3 a.m.

			N	% .08+	N	% .08+	N	% .08+	N	% .08+

Crashes
Single-vehicle drivers	Weekday	PDO/Nonfatal	70	4%	46	17%	53	26%	10	70%
		Fatal 9799^d	361	24%	240	43%	145	52%	342	63%
		Fatal 0406^d	413	24%	358	46%	204	50%	437	61%

	Weekend	PDO/Nonfatal	50	4%	21	10%	27	37%	14	57%
		Fatal 9799^d	137	28%	139	50%	107	55%	197	64%
		Fatal 0406^d	196	22%	172	48%	171	56%	267	69%

Multiple-vehicle drivers	Weekday	PDO/Nonfatal	550	7%	245	16%	250	28%	65	37%
		Fatal 9799^d	1126	21%	896	38%	514	47%	934	64%
		Fatal 0406^d	2100	20%	1745	37%	980	49%	1883	64%
		Fatal 9799^c	821	19%	624	37%	365	46%	615	62%
		Fatal 0406^c	1464	18%	1179	34%	669	46%	1231	61%

	Weekend	PDO/Nonfatal	245	8%	138	23%	184	28%	64	44%
		Fatal 9799^d	550	29%	446	48%	385	54%	620	69%
		Fatal 0406^d	1054	25%	929	44%	723	55%	1211	69%
		Fatal 9799^c	401	25%	295	46%	230	51%	415	67%
		Fatal 0406^c	723	21%	637	38%	467	50%	754	65%

No Crashes (Control)
	Weekday		2,374	1%	1,070	1%	1,092	2%	278	7%
	Weekend		1,118	1%	582	2%	802	3%	262	8%

Fatal^d (unit of analysis = drivers) and Fatal^c (unit of analysis = crashes) denote prevalence estimates for fatally injured drivers (unit of analysis = driver) estimated from actual BACs for all drivers (unit of analysis = driver) in the 1997–1999 and 2004–2006 FARS and from actual BACs in each fatal crash (unit of analysis = crashes) in the 1997–1999 FARS, respectively. N″ for PDO (property damage only) and nonfatal injuries from Blomberg et al. (2005); “N” for fatal injuries from selected FARS records (selection criteria described in text). Due to missing entries, “N” in Tables 2 and 3 do not always match.