Chunk #13 — METHODS — Socio-demographic factors

Source

TTC12-ANKK1-DRD2 and CHRNA5-CHRNA3-CHRNB4 influence different pathways leading to smoking behavior from adolescence to mid-adulthood.

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Family socio-economic status, based on father’s occupation, was collected during pregnancy and at age 14 years and was classified as: professionals; skilled-workers; unskilled-workers; and farmers(46).