Collecting information about the prevalence of cannabis use is necessary but not sufficient
for understanding the size, dynamics, and outcomes associated with cannabis markets. This …

The purpose of this study was to determine the risk of Diagnostic and Statistical Manual of
Mental Disorders-Fourth Edition (DSM-IV) cannabis abuse and dependence at different …

AIMS: To determine whether a classification of cannabis users into different types can help
to clarify the relationship between cannabis potency and consumption behaviour, harmful …

Objective To determine if higher potency cannabis is associated with earlier progression to
regular cannabis use, daily cannabis use, and cannabis use disorder symptom onset …

Background Prior work suggests that perceived risk and perceived availability of cannabis
independently affect cannabis use. However, perceived risk likely modifies the effect of …

Background Prior research shows that negative drinking outcomes among young adults may
be exacerbated by cannabis use. However, to date, there have been few longitudinal …

Background Frequent cannabis users are at high risk of dependence, still most (near) daily
users are not dependent. It is unknown why some frequent users develop dependence …

Purpose We evaluate if cigarette smoking and/or nicotine dependence predicts cannabis
use disorder symptoms among adolescent and young adult cannabis users and whether the …

Aims To determine the degree to which cigarette smoking predicts levels of cannabis
dependence above and beyond cannabis use itself, concurrently and in an exploratory four …

Background Little empirical evidence exists to determine if there are alternative classification
schemes for cannabis abuse and dependence beyond the definitions provided by …