never)9860.61 (0.44 to 0.84)0.003Smoking genetic risk scorea7911.20 (1.02 to 1.41)0.03aGenetic risk score including variants reaching P < 0.05 for association with ever vs never smoking in the Tobacco and Genetics Consortium GWAS (see Supplementary Material, available at IJE online). Associations are per SD increase in genetic risk score.bDegree vs no degree.
