Nonmedical use of opioid analgesics among Ontario students.

OBJECTIVE To explore the prevalence and the demographic predictors of nonmedical use of opioid analgesics in the Canadian adolescent population. DESIGN Data are based on self-reports derived from the 2007 Ontario Student Drug Use and Health Survey, which is an anonymous, in-school, cross-sectional survey. SETTING Schools in Ontario. PARTICIPANTS A… (More)