Table 5.

Multilevel models predicting hangover incidence and degree of hangover from prior-day number of cigarettes, number of drinks, and sex

	Any hangover				Degree of hangover
Variable	γ	F	Significance	Odds ratio [95% CI]	γ	F	Significance
Events ≥ 110 mg/dl eBAC
Sex (male =1)	-0.16	0.27	N.S.	0.85 [0.47, 1.56]	0.10	0.56	N.S.
Number of drinks	0.32	65.29	p < .001	1.37 [1.27, 1.48]	0.15	115.56	p < .001
Number of cigarettes	0.10	10.37	p < .01	1.10 [1.04, 1.17]	0.05	26.11	p < .001
Events 0 < eBAC < 110 mg/dl
Sex (male =1)	-0.15	0.18	N.S.	0.89 [0.42, 1.88]	0.07	2.50	N.S.
Number of drinks	0.68	66.59	p < .001	1.98 [1.68, 2.34]	0.10	28.62	p < .001
Number of cigarettes	0.08	3.28	p = .07	1.09 [0.99, 1.19]	0.03	3.24	p = .08

Notes: For events ≥ 110 mg/dl estimated blood alcohol concentration (eBAC), n = 1,272, approximate df= 1, 108 for sex, and approximate df= 1, 109 for number of drinks and number of cigarettes. For events where 0 < eBAC < 110 mg/dl, n = 385, approximate df= 1, 97 for sex, and approximate df= 1, 98 for number of drinks and number of cigarettes. n.s. = not significant.