While type 2 diabetes is one of the most common chronic diseases in the United States, nationwide figures for incidence are difficult to obtain. We used data from a large national health insurer (Clinformatics Data Mart Database, years 2001-2017) to estimate the incidence of type 2 diabetes by state of residence at first diagnosis. Cases were adults, ages 20 years, with type 2 diabetes (ICD-CM codes with antidiabetic medication). Individuals with type 1 diabetes or secondary diabetes were excluded. The incidence rate per 100,000 person-years ranged from 450.9 in Texas to 164.1 in South Dakota (incidence rate ratio (IRR) 2.7; 95% CI: 2.5, 3.1). The states with the highest incidence were Texas, Mississippi and Alabama. States with the lowest incidence included South Dakota, North Dakota and Massachusetts. For men, the incidence rate of type 2 diabetes ranged from 524.9 in Mississippi to 212.8 in North Dakota (IRR 2.5; 95% CI: 2.2, 2.8). There was greater variation in the incidence for women; it ranged from 409.2 in Alabama to 109.8 in South Dakota (IRR 3.7; 3.1, 4.5). The median age at diagnosis was 54 years in men and 56 years in women.
M.A.M. Rogers: None. G. Imperatore: None. T. Basu: None. C. Kim: None. S.R. Benoit: None. D.B. Rolka: None. S. Saydah: None.
Centers for Disease Control and Prevention