We sought to determine incidence rates for micro- and macrovascular events in youth-onset type 1 (T1D) and type 2 (T2D) diabetes in the SEARCH (T1D: N=564; T2D: N=149) and TODAY (T2D: N=495) studies. At study visits, we ascertained self-reported ophthalmologic, kidney, neuropathy, cardiac, and peripheral and cerebrovascular events , obtained medical records for these events, and adjudicated each event using predetermined standardized and harmonized criteria. Data were available from more than 6,000 person-years in T1D and more than 8,000 person-years in T2D. Incidence rates (events per 10,000 person-years) were calculated. As shown in the table, despite similar mean diabetes duration of 10-13 years and mean HbA1c >9%, the incidence of reported complications was higher in the youth with T2D than those with T1D, with rates 2.5-fold higher for microvascular and 4.0-fold higher for macrovascular disease. These data support the aggressive nature of youth-onset T2D.
A.K.Mottl: Advisory Panel; Bayer AG, Board Member; Bayer AG, Research Support; Alexion Pharmaceuticals, Inc., Aurinia, Bayer AG, Boehringer Ingelheim International GmbH, Pfizer Inc. S.Isom: None. J.B.Tryggestad: None. R.Gubitosi-klug: None. L.M.Dolan: None. R.Dagostino: Consultant; Aetion, Inc., AstraZeneca, Biogen, Bristol-Myers Squibb Company, Daiichi Sankyo, Merck & Co., Inc. K.Drews: None.
National Institutes of Health DK061230; R01DK127208 Center for Disease Control