Stewart, DuncanVallance, KateStockwell, TimReimer, BetteSmith, AnnieReist, DanSaewyc, Elizabeth2013-08-192013-08-1920092009-10http://hdl.handle.net/1828/4762CARBC and McCreary Centre Society Statistical BulletinThe 2008 BC Adolescent Health Survey IV (N=29,440) included 50 of BC’s 59 school districts and 92% of public school students (grades 7 to 12). There have been encouraging downward trends in usage rates for alcohol, tobacco and marijuana over the past 10 years in BC. However, rates of risky use and related harms remain a significant concern, particularly among older students.enCanadian Institute for Substance Use Research (CISUR)Centre for Addictions Research of BC (CARBC)adolescentsubstanceBritish ColumbiaalcoholtobaccomarijuanaTechnical ReportDepartment of Psychology