The perceived great risk of regular cannabis use varied significantly between 2002 and 2012 among the total sample of past year daily cannabis users χ2(10, N = 15,472) = 3.19, p=0.001 (Table 3c). Though the perceived risk of regular cannabis use did not vary significantly for most race/ethnicity-age subgroups between 2002 and 2012, notable exceptions included individuals between the ages of 18–25 χ2(10, N = 10,060) = 4.01, p<0.001 and Whites age 18–25 χ2(10, N = 6,790) = 4.29, p<0.001, where perceived risk varied over the course of the decade.
