Chunk #14 — 2. Methods — 2.4. Operationalizing age at onset — Cigarettes

Source

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

Embedded

yes

Text

Age at first cigarette use was defined as the age at which the participant tried her first cigarette. A total of 67.8% of the sample reported having tried at least one cigarette.