The incidence of insulin-dependent diabetes mellitus (100M) varies dramatically across racial groups and countries, with annual age-adjusted rates of approximately 40/100, 000 per year in Finland, but only 0.51100, 000 per year in China. Although reasons for these marked geographic differences are unknown, it is likely that genetic variations across populations play a m | Standardization of Epidemiologic Studies of Host Susceptibility by Janice S. Dorman, Paperback | Indigo Chapters