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Aim
This study estimated whether and how the 12‐month prevalence of cannabis use disorder among US youth aged 12–17 and emerging adults aged 18–25 varied by time since first cannabis use.
Design
Repeated cross‐sectional survey data from the 2015–17 National Surveys on Drug Use and Health (NSDUH).
Setting
United States.
Participants
A total of 101 000 NSDUH participants aged 12–25.
Measurements...
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