Table 1.

Test of the linear trend in marijuana use prevalence by race, and whether the slope of marijuana use prevalence significantly differs across race

Grade	Comparison	Estimate	Standard Error	t- Value	P-value
10	Year slope in White	0.006	0.007	0.940	0.348
	Year slope in Black	0.044	0.010	4.430	<0.001
	Year slope in Hispanic	0.016	0.009	1.670	0.094
	Year slope in Asian	−0.026	0.020	−1.280	0.201
	Year slope in Mixed	0.011	0.010	1.140	0.2545
	Slope diff, Black vs. White	0.038	0.009	4.230	<0.001
	Slope diff, Hispanic vs. White	0.010	0.008	1.180	0.240
	Slope diff, Asian vs. White	−0.031	0.019	−1.640	0.101
	Slope diff, Mixed vs. White	0.005	0.009	0.590	0.556
12	Year slope in White	0.008	0.008	1.000	0.315
	Year slope in Black	0.066	0.010	6.390	<0.001
	Year slope in Hispanic	0.055	0.010	5.450	<0.001
	Year slope in Asian	0.038	0.017	2.250	0.024
	Year slope in Mixed	0.037	0.011	3.320	<0.001
	Slope diff, Black vs. White	0.058	0.008	6.890	<0.001
	Slope diff, Hispanic vs. White	0.047	0.008	5.930	<0.001
	Slope diff, Asian vs. White	0.030	0.016	1.940	0.053
	Slope diff, Mixed vs. White	0.030	0.009	3.150	0.002

^*Estimates based on model that controls for parental education, the interaction of parental education and race, gender, class size, public versus private school, and state level covariates including state passage of a medical marijuana law before 2006, state passage of a medical marijuana between 2006 and 2015, population density, percent male, percent white, percent in ages 10 to 24, and percent with no high school education.