2001 US National Responses Marijuana Use « Survey Intro and Options

Overall, male students (13.2%) were significantly more likely than female students (7.5%) to have used marijuana before age 13 years. This significant sex difference was identified for all the racial/ethnic and grade subpopulations. Hispanic male students (16.5%) were significantly more likely than white male students (12%) to have tried marijuana before age 13 years.

Overall, students in grades 9 and 10 (11.6% and 12.1%, respectively) were significantly more likely than students in grade 12 (7.8%) to have used marijuana before age 13 years, and students in grade 10 (12.1%) were significantly more likely than students in grade 11 (8.5%) to have done so. Prevalence varied fourfold from 4.5% to 17.8% (median: 11.1%) across state surveys. Across local surveys, prevalence ranged from 7.5% to 15.6% (median: 11.5%).