Associations Observed Primarily Among One Smoking Stratum. For selected variants for which an association was primarily observed only in one smoking stratum, a comparison of the p values for stage 1 linear association models, including a main effect model adjusted for age, sex, principal components, and study-specific covariates (as appropriate) in all individuals and stratified by smoking exposure; a model additionally adjusted for smoking exposure; and a model that also includes a smoking exposure × SNP interaction term, from which a 1df test of interaction and a 2df joint test of main effect and interaction were calculated. a.) rs7364132 (DGCR8) × ever-smoking on triglycerides (n = 21,834 [11,113 never smokers; 10,725 ever-smokers]), b.) rs79950627 (MIR4686) × current smoking on LDL (n = 23,348 [18,384 non-smokers; 4,973 current smokers]), c.) rs56167574 (PRKAG2) × ever smoking on LDL (n = 23,353 [11,700 never smokers; 11,649 ever-smokers]), and d.) rs77810251 (PTPRZ1) × ever smoking on HDL (n = 23,146 [11,560 never smokers; 11,592 ever-smokers]).