Chunk #9 — Results — Prevalence, onset, frequency of use

Source

Prevalence and Correlates of DSM-5 Cannabis Use Disorder, 2012-2013: Findings from the National Epidemiologic Survey on Alcohol and Related Conditions-III.

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Mean age at onset of cannabis use disorder was 21.7 (SE=0.23) years; mean ages at onset of mild, moderate and severe disorders were 23.1 (SE=0.38), 21.2 (SE=0.44), and 20.1 (SE=0.34) years.