Table 3.

Odds Ratios and Poisson Regression Coefficients for Zero-inflated Poisson Models Predicting Driving Behaviors from Marijuana Expectancies, Driving Cognitions, and Covariates

	Driving While High
Variable	OR	95% CI	β	SE
Negative marijuana expectancies	0.58**	0.38, 0.87	− .11***	.02
Perceived danger	0.55**	0.38, 0.80	− .26***	.03
Perceived negative consequences	1.16	0.76, 1.77	− .05*	.02
Social norms	0.85	0.63, 1.15	−. 34***	.04
Male gender	1.81*	1.04, 3.12	− .08***	.02
Marijuana use frequency (past month)	1.81***	1.53, 2.13	.60***	.03
	Riding With a High Driver
	OR	95% CI	β	SE
Negative marijuana expectancies	0.96	0.66, 1.41	− .13***	.02
Perceived danger	0.69*	0.50, 0.95	− .24***	.02
Perceived negative consequences	0.87	0.60, 1.28	− .04*	.02
Social norms	0.65**	0.51, 0.83	− .47***	.03
Male gender	0.78	0.47, 1.29	− .06***	.02
Marijuana use frequency (past month)	1.50***	1.28, 1.76	.48***	.02

Note. OR = odds ratio; CI = confidence interval. β = standardized Poisson regression coefficient. SE = standard error of β.

^*p< .05.

^**p< .01.

^***p< .001.