A prospective study of newly incident cannabis use and cannabis risk perceptions: Results from the United States Monitoring the Future study, 1976-2013.

ABSTRACT: BACKGROUND:A prevailing epidemiological theory about drug use occurrence among secondary school students is that trends in perceived risk of drug-related harms can drive use. If so, cannabis risk perceptions during one school year should predict newly incident cannabis use in the same school the following year. We aimed to study trends in incidence and epidemiological clustering of cannabis use among United States (US) 12th-graders, and a novel prediction that incidence in school-year 't' is influenced by school-specific cannabis risk perceptions (CRP) of 12th-graders a year prior at 't-1'. METHODS:US schools sampled each year from 1976 to 2013 (∼130 schools per year) yielded an annual nationally representative sample of ∼15-16,000 12th-graders with questionnaire assessments. Analyses invo

SUBMITTER: Parker MA 

PROVIDER: S-EPMC5959792 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature