Adolescent tobacco and cannabis use: young adult outcomes from the Ontario Child Health Study

BACKGROUND: This study examines the longitudinal associations between adolescent tobacco and cannabis use and young adult functioning. METHODS: Data for analysis come from the Ontario Child Health Study (OCHS), a prospective study of child health, psychiatric disorder and adolescent substance use in a general population sample that began in 1983, with follow-ups in 1987 and 2001. The sample for analysis includes 1,282 individuals who were …