Objective: To report the incidence of insulin-dependent diabetes mellitus (IDDM) in the Province of Pavia, Italy, in the 0- to 29-year-old age-group between 1988 and 1992. Urban versus rural residence, socioeconomic level, and family size of IDDM cases were also investigated.
Research Design And Methods: A prospective register was established in 1988 to collect all newly diagnosed IDDM patients with onset before 30 years of age.