Questionnaire No. 1

Shortly after the consent, the participants were invited to answer a questionnaire online (a hard copy if sent by post if wished) during about 45 - 60 minutes.

This questionnaire was about the participants' socioprofessional and family background, their consumption of alcohol, cannabis and other drugs, as well as their personality and behavioral addictions like gambling, for example.

The participation was rewarded with a gift voucher, which was sent shortly after the questionnaire was filled in.

   Take a look at the questionnaire No. 1