For the past two decades the Survey on Health and Use on National Defence and Citizenship Day (ESCAPAD) conducted by the OFDT has made it possible to quantify the use of psychoactive substance by 17-year-olds at a regional level.
Every four years, the ESPAD (European School Survey Project on Alcohol and Other Drugs) survey analyses and compares psychoactive substance use among 16-year-olds in more than 30 European countries.