Table 3.

Bivariate and Multivariate Associations with Past 12-Month Alcohol Abuse^||

	Bivariate		Multivariate
	OR	95% CI	aOR	95% CI
Sex
Male (Ref)
Female	0.5	(0.3, 0.8)	0.8	(0.4, 1.5)
Race/Ethnicity
Latino/Hispanic (Ref)
White	0.8	(0.5, 1.3)	0.8	(0.4, 1.5)
Black/AA	0.8	(0.5, 1.2)	0.9	(0.5, 1.6)
Other	0.5	(0.2, 1.2)	0.6	(0.2, 2.1)
Age (Continuous)	0.8	(0.7, 1.0)	1.0	(1.0, 1.0)
Health Insurance**	0.7	(0.5, 1.0)	0.9	(0.6, 1.5)
Injury Severity (Continuous)	1.0	(0.9, 1.3)	1.0	(1.0, 1.0)
Injury Mechanism
Other
Assault¶	1.6	(1.1, 2.4)	0.7	(0.4, 1.1)
Alcohol-Using Behaviors*
Peritraumatic Substance Use†	6.8	(4.5, 10.2)	3.8	(2.3, 6.2)
Binge Drinking (30-day)	11.2	(7.0, 17.7)	6.5	(3.9, 10.8)
12-Month Drug Use*
Marijuana	2.8	(1.9, 4.1)
Crack/Cocaine Use	3.3	(2.0, 5.5)
Hallucinogen Use	3.8	(1.4, 10.7)
Ecstasy Use	3.7	(1.3, 10.7)
Heroin Use	6.5	(1.9, 22.0)
Other Drug Use	2.8	(1.4, 5.4)
Prescription Drug Use§	4.0	(1.9, 8.2)
Collapsed 12-Month Drug Use Categories
No Drug Use (Ref)
Marijuana Only	2.8	(1.8, 4.5)	1.8	(1.0, 3.0)
Hard drug use±	5.7	(3.4, 9.6)	2.7	(1.4, 5.2)

Analyses are weighted to represent all LA County trauma center patients

Abbreviations: OR=Odds Ratio; aOR=Adjusted Odds Ratio; 95% CI=95% Confidence Interval

^||Positive endorsement of 1 of 4 DSM-IV symptoms of alcohol abuse, from CIDI

^**Twelve cases who responded “don’t know” were excluded; when these responses were changed to “no”, there were no qualitative differences.

^¶Does not include suicide attempts or cases of domestic violence

^*Response options are not mutually exclusive

^†Any alcohol or drug use 2 hours immediately before being injured

^§Use of prescription drugs or pain killers in a way not prescribed by a doctor

^±Use of either crack/cocaine, hallucinogen, ecstasy, heroin, other drugs not specified, or prescription drugs or pain killers in a way not prescribed by a doctor