Chunk #13 — 2. Methods — 2.4. Operationalizing age at onset — Alcohol

Source

Common genetic influences on the timing of first use for alcohol, cigarettes, and cannabis in young African-American women.

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Age at initiation of alcohol use was defined as the age at which the participant first consumed a full alcoholic drink, i.e. a standard can or bottle of beer, a glass of wine or a shot of liquor. Consumption of one or more alcoholic drinks (lifetime) was reported by 87.5% of participants.