Marijuana use by age group

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Definitions: Marijuana use in the past month.

Data Source: Department of Health and Human Services, Substance Abuse and Mental Health Services Administration, Office of Applied Studies.
State Estimates of Substance Use from the National Survey on Drug Use and Health accessed online at http://www.oas.samhsa.gov/.

Footnotes: Updated September 2018.
A 95 percent confidence interval for each estimate can be found at Marijuana use by age group.