Methods: A nationwide sample of 12,721 college students
completed a questionnaire concerning the use of drugs and other behaviors. The Alcohol,
Smoking and Substance Involvement Screening Test (ASSIST-WHO) criteria were used to assess
were used to assess hazardous drug use. A multivariate logistic regression model tested the
associations of ASSIST-WHO scores with gender and age. The same analyses were carried out
to measure drug use in the last 30 days.