Table 2.

Associations between Type of Substance Use Day, Anxiety, and Sex and Next-Day Negative Affect

	Next-Day Negative Affect
	Model 1		Model 2		Model 3
	γ	SE	γ	SE	γ	SE
Fixed Effects
Intercept	14.74***	2.70	11.61***	2.37	11.08***	2.43
Level 1
Alc Only	0.16	0.43	0.06	0.58	1.54†	0.80
Can Only	−0.05	0.39	0.13	0.52	1.13	0.77
No SU	0.57	0.41	0.88	0.54	1.37†	0.75
Weekend	−0.33	0.21	−0.31	0.21	−0.31	0.21
Level 2
Prop. Alc	−0.30	3.27	−1.28	2.80	−1.25	2.79
Prop. Can	0.00	4.04	0.17	3.44	0.16	3.42
Prop. No SU	2.59	2.93	3.26	2.51	3.27	2.50
Anxiety			0.66***	0.10	0.71***	0.14
Sex			0.54	0.73	1.59	1.27
Cross-Level
Alc X Anxiety			0.02	0.09	−0.16	0.12
Can X Anxiety			−0.04	0.08	−0.22†	0.12
No SU X Anxiety			−0.07	0.09	−0.13	0.11
Alc X Sex					−3.22**	1.15
Can X Sex					−1.82†	1.02
No SU X Sex					−0.86	1.05
Anxiety X Sex					−0.12	0.21
Alc X Anxiety X Sex					0.45*	0.20
Can X Anxiety X Sex					0.34*	0.17
No SU X Anxiety X Sex					0.11	0.18
Random Effects
Intercept Variance	24.33***	2.98	17.05***	2.13	16.90***	2.11
Residual Variance	17.01***	0.59	16.97***	0.59	16.85***	0.58

Note.

^***p < .001.

^**p <.01.

^*p < .05.

^†p < .10.

Data are limited to person-days on which individuals reported using alcohol-only, cannabis-only, alcohol and cannabis simultaneously (SAM), or no substance use. Alc = Alcohol-only day; coded 1 = alcohol-only day, 0 = SAM day. Can = Cannabis-only day; coded 1 = cannabis-only, 0 = SAM day. No SU = No substance use day; coded 1 = no substance use, 0 = SAM day. Prop. Alc/Can/No SU = Person-specific proportion of alcohol-only/cannabis-only/no substance use days; person i’s number of alcohol-only/cannabis-only/No SU days divided by the total number of days person i reported alcohol-only, cannabis-only, SAM use, or no substance use. Sex is coded 0 = female, 1 = male. Weekend is coded 0 = Sunday – Wednesday, 1 = Thursday – Saturday. Models predicting next-day negative affect were based on 1830 observations from 154 individuals.