... of substance use from adolescence to young adulthood Based on data from a longitudinal study, the main focus was on problematic substance use rather than on substance use disorders In accordance ... questionnaires dealing with depression, abnormal eating behaviour, and substance abuse were also included In order to analyze potential risk, compensatory, vulnerability, and protective factors of psychopathology ... items asking for the frequency of alcohol, tobacco, and cannabis use, a steadily increasing number of subjects across the time span from early adolescence to young adulthood was identified in the...