[Some aspects of epidemiology in insulin-dependent diabetes mellitus (IDDM) (I)]

Epidemiological studies based on registries from many centers in the world revealed geographical variation of IDDM, with the highest incidence in Scandinavian countries. There is a gradient north to south in occurrence of IDDM, and differences in incidence between urban and rural populations. Poland is a country with a rather low incidence of IDDM, not exceeding 6/100,000 in the population 0-29 years of age until 1992. Generally a higher incidence of IDDM has been observed in Whites, there are differences between migrating populations ethnically homogenous. The highest incidence occurs in 10-14 age group, with male sex predominance.