J Adolesc Health 2021 Aug 4. Epub 2021 Aug 4.
Projet COMPASS-Québec, VITAM - Centre de recherche en santé durable de l'Université Laval, Quebec City, Quebec, Canada; Department of Social and Preventive Medicine, Faculty of Medicine - Université Laval, Ferdinand Vandry Pavillon, Quebec City, Quebec, Canada.
Purpose: The impact of the COVID-19 pandemic on adolescent mental health is a global concern; however, most research is cross-sectional or started after the pandemic response began and thus unable to evaluate within-individual change. The purpose of this prospective study was to evaluate the effect of the initial COVID-19 response on adolescent mental health and ill-health as a natural experiment.
Methods: We used 3-year linked data from the COMPASS study, including 7,653 Canadian (Quebec, Ontario) adolescents from which 2,099 completed surveys in all three waves (pre-COVID-19 [2018 and 2019] and online [May-July 2020], 2-3 months into the pandemic). Read More