Age of onset and type of diabetes.
The age of onset and the clinical type of diabetes mellitus were evaluated on the basis of a cross-sectional study of medical records of 14 municipal health centers in East Finland. Altogether 281 patients were classified as having insulin-dependent (IDDM) and 2713 as having non-insulin-dependent (NIDDM) diabetes. Nearly all patients diagnosed before the age of 19 had IDDM, but a large proportion (37%) of all diagnoses of IDDM were made after that age. Six percent of all diabetic subjects in the age group 15-19 yr were classified as NIDDM and the proportion increased rapidly in older age groups. Half of the patients with NIDDM were diagnosed over the age of 64.
D000328:Adult; D000367:Age Factors; D000368:Aged; D003430:Cross-Sectional Studies; D003922:Diabetes Mellitus, Type 1 / Q000175:diagnosis* / Q000453:epidemiology; D003924:Diabetes Mellitus, Type 2 / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D005387:Finland; D006801:Humans; D008297:Male; D008875:Middle Aged