Between 2002 and 2012, perceived great risk of regular cannabis use varied significantly χ2(10, N = 315,218) = 74.73, p<0.001, and the prevalence of perceived great risk decreased from 58.8% in 2002 to 46.7% in 2012 among women χ2(1, N = 56,155) = 252.38, p<0.001 (Supplemental Table 1b2). Exceptions to the observed variation in perceived great risk among women came among Hispanic women age 50+ χ 2(10, N = 2,459) = 1.35, p=0.215, as well as among women of Other race/ethnicity χ 2(10, N = 25,569) = 2.90, p=0.003, age 12–17 χ2(10, N = 8,610) = 1.99, p=0.043, age 26–49 χ2(10, N = 6,242) = 1.83, p=0.067, and age 50+ χ2(10, N = 1,780) = 1.21, p=0.288.
