Error message

Notice: Undefined property: stdClass::$comment_count in comment_node_page_additions() (line 728 of /raid/home/drugfacts/dev/modules/comment/comment.module).

Estimated 30-Day Prevalence of Use of Various Drugs for Grades 8, 10, and 12 Combined


Johnston, L. D., O’Malley, P. M., Miech, R. A., Bachman, J. G., & Schulenberg, J. E. (February 2015). Monitoring the Future national survey results on drug use: 1975-2014: Overview, key findings on adolescent drug use. Ann Arbor: Institute for Social Research, The University of Michigan, Table 3, p. 57.