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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Drug Alcohol Depend. 2017 Aug 18;179:379–386. doi: 10.1016/j.drugalcdep.2017.07.027

Table 3.

Difference in difference estimate of variation in linear slopes of marijuana use from 2006 through 2015 across individual-level covariates among 12th grade students

Estimate Standard
Error		 DF t-Value
Male versus female Black versus white −0.009 0.016 −0.590 0.555
Hispanic versus White −0.023 0.014 −1.590 0.112
Mixed race versus White −0.007 0.019 −0.360 0.719
Public versus private Black versus white −0.028 0.038 −0.760 0.450
Hispanic versus White 0.036 0.026 1.350 0.176
Mixed race versus White 0.037 0.033 1.100 0.271
SMSA versus non-SMSA Black versus white 0.042 0.022 1.850 0.065
Hispanic versus White 0.057 0.026 2.140 0.032
Mixed race versus White 0.010 0.027 0.360 0.720
Parent education high school versus no high school Black versus white 0.042 0.032 1.310 0.191
Hispanic versus White 0.007 0.024 0.270 0.785
Mixed race versus White 0.011 0.040 0.280 0.779
Parent education some college versus no high school Black versus white 0.050 0.032 1.570 0.116
Hispanic versus White 0.021 0.025 0.840 0.402
Mixed race versus White 0.009 0.038 0.230 0.819
Parent education college degree or higher versus no high school Black versus white 0.066 0.032 2.070 0.039
Hispanic versus White 0.033 0.026 1.280 0.201
Mixed race versus White 0.028 0.038 0.730 0.466
Class size 200–499 versus less than 200 Black versus white 0.050 0.019 2.670 0.008
Hispanic versus White 0.050 0.019 2.590 0.010
Mixed race versus White 0.042 0.022 1.920 0.055
Class size 500+ versus less than 200 Black versus white 0.055 0.029 1.860 0.063
Hispanic versus White 0.052 0.024 2.180 0.029
Mixed race versus White −0.015 0.028 −0.520 0.603
*

Estimates are log odds ratios and are 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.