Differences in patterns of cannabis use among youth: Prevalence perceptions of harm and driving under the influence in the United States where non-medical cannabis markets have been established proposed and prohibited

摘要

Introduction and AimsCannabis use is the most widely used illicit substance in the United States (US). Currently, over half of US jurisdictions have legalised medical cannabis and nine US jurisdictions (and Washington DC) have legalised non-medical cannabis. Comparisons across jurisdictions can help to evaluate the impact of these policies. The current study examined patterns of cannabis use among youth in three categories: (i) states that have legalised non-medical cannabis with established markets; (ii) jurisdictions that recently legalised non-medical cannabis without established markets; and (iii) all other jurisdictions where non-medical cannabis is prohibited.