Simultaneous alcohol and cannabis expectancies predict simultaneous use

Table 7 Linear regression: simultaneous alcohol and cannabis expectancies account for variance in the prediction of days per month using alcohol and cannabis simultaneously beyond individual alcohol expectancies or cannabis expectancies.

Variable	ΔR²	R²	β	t
Days Using Alcohol and Cannabis Simultaneously (df = 2539)
Age	.014		.123	6.21**
Gender	.001	.015	-.028	-1.42
AEQ	.002	.017	.049	1.84
MEEQ	.001	.018	.046	2.39*
Simultaneous Expectancies	.017	.035	.179	6.74**

Note: Standardized regression coefficients (βs) derive from the step in which they are added to the equation.
*p < .05 **p < .01 _p = .05 Cannabis per month with alcohol = Metric weight of cannabis consumed when also drinking alcohol. Drinks per month with Cannabis = Number of alcoholic drinks when also consuming cannabis AEQ = Alcohol Expectancies; MEEQ = Cannabis Expectancies.

ISSN: 1747-597X