Chunk #21 — 2. METHODS — 2.3 Measures — 2.3.3 Mental health — 2.3.3.2

Source

Onset of opportunity to use cannabis and progression from opportunity to dependence: Are influences consistent across transitions?

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yes

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Depressive episode was recorded if participants reported a two week period where they were more irritable than usual (if under age 18 at the time), felt depressed/down/sad/blue/discouraged, or had a lot less interest in things. Self-reported age of the first occurring depressive episode was used to make time varying covariates for survival analysis.