diabetes mellitus onset/diagnosis measurement age at onset/diagnosis of diabetes mellitus 2012-09-13T11:57:04Z A measurement of the chronological age, that is, the length of time since birth, of the individual when the symptoms of diabetes mellitus first appeared, or when an official diagnosis of diabetes mellitus was first determined. Diabetes mellitus is a chronic syndrome of impaired carbohydrate, protein, and fat metabolism owing to insufficient secretion of insulin or to target tissue insulin resistance and resulting in hyperglycemia due to decreased glucose tolerance. CMO:0001112 JSmith VT:0015088 clinical_measurement_ontology