Trends in Lifetime Cannabis Use among Czech School-aged Children from 2002 to 2014.

Objective: The aim of the study was to examine trends in the prevalence of lifetime cannabis use among the Czech 15-year old students.

Methods: Data from the nationally representative Health Behaviour in School-aged Children Survey, conducted in the Czech Republic in 2002, 2006, 2010 and 2014, were used. Trends in cannabis use among both boys and girls were modelled through binary logistic regression with period as a predictor of the lifetime cannabis use.