Past 15-year trends in adolescent marijuana use: Differences by race/ethnicity and sex.

ABSTRACT:

Background

The potential for increases in adolescent marijuana use is an important concern given recent changes in marijuana policy. The purpose of this study was to estimate trends in marijuana use from 1999 to 2013 among a national sample of US high school students. We examine changes over time by race/ethnicity and sex.

Methods

Data are from the National Youth Risk Behavior Survey (YRBS), which involves biennial, school-based surveys that generate nationally representative data about 9th-12th grade students in the United States. Students self-reported sex, race/ethnicity, and marijuana use (i.e., lifetime use, past 30-day use, any use before age 13). We generated national estimates of the prevalence of marijuana use for the time period, and also tested for linear and quad

SUBMITTER: Johnson RM 

PROVIDER: S-EPMC4582007 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature