Editing Monitoring the Future (section)

== Regular marijuana and cigarette use by 12th graders ==

Chart below is from a NIDA article. Text at the top was added later. Chart is for regular marijuana and cigarette use by 12th graders in the USA in the past 30 days. For cigarettes actual daily use is measured. For marijuana it is for use on 20 or more occasions in the past 30 days.<ref name=2018charts>Miech, R. A., Schulenberg, J. E., Johnston, L. D., Bachman, J. G., O'Malley, P. M., & Patrick, M. E. (December 17, 2018). "National Adolescent Drug Trends in 2018." Monitoring the Future: Ann Arbor, MI. [http://www.monitoringthefuture.org/data/18data/18drtbl4.pdf Stats source] is linked from the [http://www.monitoringthefuture.org/data/18data.html#2018data-drugs charts index]. From [http://www.monitoringthefuture.org/data/18data/18drfootnotes.pdf footnotes]:  "Daily use is defined as use on 20 or more occasions in the past 30 days except for cigarettes and [[smokeless tobacco]], for which actual daily use is measured." This particular footnote is for more than one chart. Smokeless tobacco is not measured in the [https://d14rmgtrwzf5a.cloudfront.net/sites/default/files/daily_marijuana_use.gif marijuana and cigarettes chart]. That NIDA chart is found in [https://www.drugabuse.gov/publications/marijuana-facts-parents-need-to-know/want-to-know-more-some-faqs-about-marijuana this NIDA article].</ref>

[[File:Regular marijuana and cigarette use by 12th graders in the USA in the last 30 days. By year.gif|thumb|500px|none|Green line is for marijuana. Dark blue/purple line is for cigarettes.<ref name=2018charts/>]]