Table 3.

Multilevel Models of Alcohol and Energy Drink Use Predicting Daily Alcohol Outcomes

	Number drinks last night ERR (CI)	Number problems last night ERR (CI)	Sex after drinking OR (CI)	Drove after drinking OR (CI)
Intercept	4.01 (3.59–4.48)***	1.24 (0.97–1.59)	0.12 (0.08–0.18)***	0.09 (0.06–0.15)***
Level 1: Daily level
Alcohol and energy drink use last night	1.51 (1.30–1.77)***	1.48 (1.02–2.14)*	1.26 (0.50–3.21)	0.53 (0.14–2.06)
Number drinks last night	--	1.13 (1.05–1.23)**	1.21 (1.05–1.39)**	1.06 (0.93–1.21)
Level 2: Person level
Impulsivity	1.00 (1.00–1.01)	1.02 (1.00–1.04)*	1.01 (0.97–1.04)	1.02 (0.97–1.07)

Note. Separate models were conducted for each outcome. Alcohol and energy drink use is measured by 0 = did not drink alcohol mixed with energy drinks during the previous night’s drinking episode and 1 = used at least one alcoholic beverage mixed with energy drinks the previous night. OR = odds ratio from Bernoulli multilevel modeling distribution. ERR = event rate ratio from Poisson distribution. CI = confidence interval.

^***p< .001.

^**p< .01.

^*p< .05.