Table 2.

Regression analysis of binge drinking on patients with complete data on binge drinking and smoking (n=2162)

	Univariate analysis			Multiple variable analysis
Variable	OR	95% CI	P-value	OR	95% CI	P-value
Smoke
No	1			1
Yes	4.0	(3.3, 4.9)	<.0001	3.1	(2.5, 3.9)	<.0001
Age
18–21	1			1
22–25	1.3	(1.1, 1.6)	0.016	1.5	(1.1, 1.9)	0.003
26–30	1.0	(0.8, 1.3)	0.759	1.1	(0.9, 1.5)	0.366
Gender
Female	1			1
Male	2.3	(1.9, 2.7)	<.0001	1.5	(1.2, 1.9)	0.0001
Reason for ER visit
Non-injury	1			1
Injury	1.4	(1.2, 1.8)	0.001	1.4	(1.1, 1.8)	0.007
Concerned about weight
No	1
Yes	0.8	(0.7, 1.0)	0.036
Exercise
No	1
Yes	1.2	(1.0, 1.5)	0.023
Stressed
Less than weekly	1
Weekly or more often	1.1	(1.0, 1.4)	0.135
Use seatbelt
Always	1
Not always	1.7	(1.1, 2.6)	0.010
Use marijuana
No	1			1
Yes	4.3	(3.4, 5.5)	<.0001	2.9	(2.2, 3.9)	<.0001
On medication
No	1			1
Yes	0.7	(0.6, 0.8)	0.0002	0.7	(0.6, 0.9)	0.001
Ever used drugs
No	1
Yes	2.6	(1.7, 4.1)	<.0001