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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2014 Apr 28;140:145–155. doi: 10.1016/j.drugalcdep.2014.04.016

Fig. 1.

Fig. 1

Measures of marijuana-related attitudes, change across time (2003-4 to 2010-11) within Colorado (Blue) and within 34 states without medical marijuana laws (NMMS, Red). A. Great risk to smoking marijuana 1-2 times per week. B. Fairly/very easy to obtain marijuana. C. Somewhat or strongly disapprove of adults trying.

Row 1 represents 12-17 year olds, Row 2 represents 18-25 year olds and Row 3 represents those 26+ years. X– axis indicates year, while y-axis indicates percent of respondents endorsing an item. Dashed line indicates that years 2009-10 and 2010-11 are not independent. Brackets and associated asterisk(s) indicate a significant change within-Colorado across years. Asterisk below lines, just above the years (x-axis) indicate that Colorado and 34 non-medical marijuana states significantly differed. * <0.05