Table 3.

Odds Ratios (ORs) of injury related to alcohol and drug use from case-control and case-crossover analysis

	Case-control analysis		Case-crossover analysis
	OR (95% CI)	P	OR (95% CI)	P
Model 1a
Alcohol use	2.67 (1.86, 3.82)	<0.001	2.81 (1.66, 4.76)	<0.001
Marijuana	1.52 (0.82, 2.82)	0.186	0.95 (0.44, 2.03)	0.894
Model 1b
Alcohol use	2.46 (1.70, 3.57)	<0.001	2.76 (1.62, 4.72)	<0.001
Marijuana	1.21 (0.59, 2.49)	0.609	0.83 (0.30, 2.30)	0.727
Alcohol * Marijuana	4.42 (0.80, 24.40)	0.088	1.54 (0.39, 6.18)	0.540
Model 2a
Alcohol use	2.76 (1.93, 3.97)	<0.001	2.80 (1.65, 4.74)	<0.001
Stimulants	0.56 (0.24, 1.30)	0.177	1.53 (0.47, 4.99)	0.483
Model 2b
Alcohol use	2.75 (1.90, 3.97)	<0.001	2.76 (1.62, 4.70)	<0.001
Stimulants	0.51 (0.16, 1.60)	0.246	0.96 (0.15, 6.07)	0.965
Alcohol * Stimulants	1.26 (0.23, 6.78)	0.789	2.08 (0.30, 14.36)	0.456
Model 3a
Alcohol use	2.72 (1.90, 3.89)	<0.001	2.83 (1.67, 4.78)	<0.001
Depressants	0.82 (0.51, 1.32)	0.414	2.15 (0.57, 8.09)	0.259
Model 3b
Alcohol use	2.64 (1.82, 3.85)	<0.001	2.81 (1.64, 4.80)	<0.001
Depressants	0.78 (0.46, 1.33)	0.366	2.04 (0.50, 8.34)	0.319
Alcohol * Depressants	1.53 (0.48, 4.88)	0.471	1.24 (0.26, 6.02)	0.789
Model 4a
Alcohol use	2.72 (1.89, 3.90)	<0.001	2.80 (1.65, 4.74)	<0.001
Any drug	0.99 (0.67, 1.47)	0.969	1.38 (0.69, 2.73)	0.362
Model 4b
Alcohol use	2.49 (1.67, 3.70)	<0.001	2.75 (1.58, 4.77)	<0.001
Any drug	0.91 (0.59, 1.42)	0.693	1.30 (0.58, 2.92)	0.528
Alcohol * Any drug	1.77 (0.71, 4.39)	0.221	1.25 (0.46, 3.34)	0.663
Model 5a
Alcohol use	2.71 (1.89, 3.89)	<0.001	2.80 (1.66, 4.75)	<0.001
1 drug	1.05 (0.69, 1.59)	0.829	1.32 (0.66, 2.67)	0.432
2+ drug	0.71 (0.33, 1.53)	0.379	2.55 (0.51, 12.83)	0.257
Model 5b
Alcohol only	2.49 (1.67, 3.70)	<0.001	2.75 (1.58, 4.79)	<0.001
1 drug	1.00 (0.62, 1.63)	0.995	1.27 (0.55, 2.90)	0.577
2+ drug	0.52 (0.19, 1.41)	0.202	2.20 (0.27, 17.99)	0.461
Alcohol * 1 drug	1.42 (0.54, 3.76)	0.475	1.19 (0.42, 3.36)	0.742
Alcohol * 2+ drug	12.03 (1.19, 121.45)	0.035	1.47 (0.18, 11.84)	0.715