Figure 2 shows results for adolescents (12-17 year olds; Row 1), young adults (18-25 year olds; Row 2) and other adults (26+ years of age; Row 3). Figure 2.A.i-iii (Past year use): among young adult Coloradans, past-year marijuana use increased significantly between 2007-8 and 2010-11 from 35.4% to 42.7%. Coloradans of all age groups had a significantly higher rate of past-year marijuana use compared to NMMS except for young adults in 2003-4 and other adults in 2005-6. Figure 2.B.i-iii (20+ days use): for 20+ days of marijuana use in the past month no within-Colorado changes were significant. Young adult Coloradans from 2005-6 through 2010-11 and other adult Coloradans in 2009-10 and 2010-11 had a significantly higher percent of past-month 20+ day users compared to NMMS. Figure 2.C.i-iii (marijuana abuse/dependence): past-year marijuana abuse/dependence was significantly more prevalent among adolescent Coloradans in 2009-10 and 2010-11 and young adult Coloradans in 2010-11 than those from NMMS counterparts.
