The relative risk of smoking for migrants with low, middle and high educational level compared to the US-born group of the same educational level, by country of origin1.

1Country of origin is country of birth, except for second generation migrants where it is the country of birth of the parents.2Education: Low = no higher than ‘12th grade without diploma’, Middle = from ‘high school diploma or equivalent’ to ‘college but no degree’, High = from ‘associate degree’ to ‘doctorate degree’.3Group was too small.*Significant (p≤0.05).**Other Africa: Ghana, Kenya and South Africa.