AdoQuest I (2005-11) is a longitudinal study of 1,801 grade 5 students (age 10.7 years on average), which investigated the natural course of the co-occurrence of health-compromising behaviors in children. The sample included 29 French-language elementary schools in greater Montreal selected to assure equal representation of students of high, intermediate and low socioeconomic status. Baseline data were collected in in Spring 2005 in classroom-administered, self-report questionnaires and follow-up data were collected in 5 additional cycles spanning 7 years. Cycle 6, the final data collection cycle, was conducted in grade 11 (i.e., the last year in high school in Quebec) in 2010-11 when participants were age 16.8 years on average. Themes covered in AdoQuest I include cigarette smoking, exposure to second-hand smoke, self-report body image and weight, physical activity, sedentary behaviour, exergaming, diet, alcohol use, cannabis use, use of illicit drugs, sleep and mental health. Parents completed mailed self-report questionnaires in 2006-07 and in 2008-09.
AdoQuest I was funded by the Canadian Tobacco Control Research Initiative and the Institut national de santé publique du Québec (INSPQ) through a financial contribution from the Québec Ministry of Health and Social Services to the INSPQ.