Chunk #14 — 2. Method — 2.1 Background information – twin studies and cannabis phenotypes — 2.1.2 Phenotypes: initiation of cannabis use and problematic use
Initiation of cannabis use is also often referred to as lifetime cannabis use or ‘ever used cannabis’. The core aspect is that it makes a distinction between individuals who have tried cannabis at least once in their lifetime versus those who have not. Hence, this phenotype is a dichotomous variable.
