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Nationwide, 42.4% of students had used marijuana during their lifetime (i.e., lifetime marijuana use). Overall, male students (46.5%) were significantly more likely than female students (38.4%) to report lifetime marijuana use. This significant sex difference was identified for white and Hispanic students and students in grades 9, 10, and 11. Overall, students in grades 10, 11, and 12 (41.7%, 47.2%, and 51.5%, respectively) were significantly more likely than students in grade 9 (32.7%) to report lifetime marijuana use, and students in grade 12 (51.5%) were significantly more likely than students in grade 10 (41.7%) to report this behavior. Prevalence of lifetime marijuana use ranged from 19.7% to 50.8% (median: 41.3%) across state surveys and from 29.7% to 49.7% (median: 40.6%) across local surveys. Approximately one fourth (23.9%) of students had used marijuana >1 times during the 30 days preceding the survey (i.e., current marijuana use). Overall, male students (27.9%) were significantly more likely than female students (20%) to report current marijuana use. This significant sex difference was identified for white and black students and all grade subpopulations. Overall, students in grades 10, 11, and 12 (24.8%, 25.8%, and 26.9%, respectively) were significantly more likely than students in grade 9 (19.4%) to report current marijuana use. Prevalence of current marijuana use varied threefold from 9.7% to 33.2% (median: 23.4%) across state surveys and ranged from 16.8% to 28.7% (median: 20.4%) across local surveys.
( Source: 2001 CDC Youth Risk Behavior Surveillance Survey )
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