Among cannabis users (n=65,879), blacks (mean=130.51 days/year) and mixed-race adults (mean=133.50 days/year) had a greater mean number of days using cannabis than whites (mean=109.27 days/year), and Asian-Americans had a lower mean days of use (mean=73.93 days/year) (P<0.05). Compared with white cannabis users (66.35%), more black (79.78%), native-American (78.91%), native-Hawaiian/Pacific-Islander (74.03%), mixed-race (72.88%) cannabis users reported monthly CU, and fewer Asian-American cannabis users (52.76%) reported monthly CU (P<0.05). A similar pattern in racial/ethnic variation was observed for weekly CU (ranging from 36.16% among Asian-American users to 60.84% among black users).
