Melinda C. Aldrich, Rajesh Kumar, Laura A. Colangelo, L. Keoki Williams, Saunak Sen, Stephen B. Kritchevsky, Bernd Meibohm, Joshua Galanter, Donglei Hu, Christopher R. Gignoux, Yongmei Liu, Tamara B. Harris, Elad Ziv, Joseph Zmuda, Melissa Garcia, Tennille S. Leak, Marilyn G. Foreman, Lewis J. Smith, Myriam Fornage, Kiang Liu, Esteban G. Burchard

Smoking tobacco reduces lung function. African Americans have both lower lung function and decreased metabolism of tobacco smoke compared to European Americans. African ancestry is also associated with lower pulmonary function in African Americans. We aimed to determine whether African ancestry modifies the association between smoking and lung function and its rate of decline in African Americans.