Trends in treatment of problematic cannabis use in Ontario's specialized addiction treatment system from 2010/11 to 2015/16: a repeated cross-sectional study of a health administrative database.

Background: Little is known about trends in the treatment of problematic cannabis use in Canada. Trends in treatment utilization for problematic cannabis use were examined, as well as trends in the associated sociodemographic characteristics and frequency of cannabis use.

Methods: This was a repeated cross-sectional study using data from the Drug and Alcohol Treatment Information System, capturing utilization of all community funded addiction treatment services in Ontario, Canada.