Marijuana Law, Policy & Reform

Editor: Douglas A. Berman
Moritz College of Law

Tuesday, August 28, 2018

Notable new survey data on marijuana use in the United States circa fall 2017

This new piece by multiple authors appearing in the Annals of Internal Medicine provides an interesting snapshot of marijuana use and users based on a survey administered in October 2017. The piece is titled "Smoking, Vaping, and Use of Edibles and Other Forms of Marijuana Among U.S. Adults," and here are some of the notable findings:

Among all respondents, 14.6% reported marijuana use in the past year and 8.7% reported use in the past 30 days. The prevalence of marijuana use in the past year was 20% (95% CI, 17.9% to 22.2%) in states where recreational use is legal, 14.1% (CI, 12.6% to 15.6%) in states where medical use is legal, and 12% (CI, 10.7% to 13.4%) in states where no use is legal.

A total of 12.9% of respondents reported smoking marijuana, 6% reported using edibles, 4.7% reported vaping, 1.9% reported using concentrates, and 0.8% reported using topicals. Overall, 6.7% reported using multiple forms in the past year. Prevalence of any use was inversely related to age, with persons aged 18 to 34 years reporting the highest use.... Men were more likely than women to use marijuana in any form and to use multiple forms (Table 1). Reported use was similar among racial groups.

Among persons who used multiple forms, 53% reported smoking and using edibles whereas 31% reported smoking and vaping. The prevalence of use of edibles was 11% (CI, 9.4% to 12.6%) in states where recreational use is legal, 5.1% (CI, 4.1% to 6.0%) in states where medical use is legal, and 4.2% (CI, 3.4% to 4.9%) in states where no use is legal. Baked goods/pastries and candies were the most common forms of edibles used by U.S. adults.... A limitation of our study is that those who participated in an online survey cohort may differ from those who did not, limiting generalizability. Respondents also may have underreported rates of use.

http://lawprofessors.typepad.com/marijuana_law/2018/08/notable-new-survey-data-on-marijuana-use-in-the-united-states-circa-fall-2017.html

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