Table 3.

Multilevel models testing mood and context as predictors of unplanned heavy drinking

			Odds ratio
Predictor	Estimate (SE)	t	[95% CI]
Mood model
Level 2 (person level, between person)
Female birth sex	0.45 (0.13)	3.47***	1.56 [1.21, 2.01]
Age	-0.03 (0.05)	-0.65	0.97 [0.88, 1.07]
Fraternity/sorority membership	-0.13 (0.13)	-1.03	0.88 [0.69, 1.13]
Alcohol use (person mean)	0.32 (0.03)	9.58***	1.38 [1.29, 1.47]
Positive mood (person mean)	-0.22 (0.07)	-3.09**	0.81 [0.70, 0.92]
Negative mood (person mean)	0.02 (0.06)	0.41	1.03 [0.91, 1.16]
Level 1 (daily level, within person)
Alcohol use (person centered)	0.39 (0.02)	18.29***	1.48 [1.41, 1.54]
Time trend (i.e., study quarter)	0.14 (0.04)	3.31***	1.15 [1.06, 1.25]
Weekend	-0.51 (0.10)	-5.29***	0.60 [0.50, 0.73]
Positive mood (person centered)	-0.03 (0.05)	-0.75	0.97 [0.88, 1.06]
Negative mood (person centered)	0.02 (0.04)	0.64	1.03 [0.95, 1.11]
Context model
Level 2 (person level, between person)
Female birth sex	0.49 (0.12)	4.00***	1.63 [1.28, 2.07]
Age	-0.003 (0.05)	-0.07	1.00 [0.91, 1.09]
Fraternity/sorority membership	-0.08 (0.12)	-0.65	0.93 [0.73, 1.17]
Alcohol use (person mean)	0.32 (0.03)	10.29***	1.38 [1.30, 1.47]
Level 1 (daily level, within person)
Alcohol use (person centered)	0.41 (0.02)	20.13***	1.50 [1.45, 1.56]
Time trend (i.e., study quarter)	0.15 (0.04)	3.90***	1.16 [1.08, 1.25]
Weekend	-0.51 (0.09)	-5.76***	0.60 [0.51, 0.72]
Special occasion or event	-1.11 (0.13)	-8.56***	0.33 [0.26, 0.43]
Drinking with othersa	-0.15 (0.20)	-0.78	0.86 [0.58, 1.26]
Location
Drinking at a bar or partyb	0.06 (0.10)	0.60	1.06 [0.87, 1.30]
Drinking at another locationb	0.46 (0.15)	3.00**	1.59 [1.17, 2.15]

Notes: The model testing mood analyzed 3,080 drinking days across 339 people, and the model testing context analyzed 3,743 drinking days across 341 people. CI = confidence interval.

^aReference category is drinking alone

^breference category is drinking at home.

^**p < .01

^***p < .001.