Study concept and design: Orchard, Nathan, Zinman, Brillon, Lachin.
Acquisition, analysis, or interpretation of data: Orchard, Nathan, Zinman, Cleary, Brillon, Backlund, Lachin.
Drafting of the manuscript: Orchard, Nathan, Cleary, Brillon, Backlund, Lachin.
Critical revision of the manuscript for important intellectual content: Orchard, Nathan, Zinman, Brillon, Lachin.
Statistical analysis: Orchard, Cleary, Backlund, Lachin.
Obtained funding: Orchard, Nathan, Zinman, Lachin.
Administrative, technical, or material support: Orchard, Zinman, Cleary, Backlund.
Study supervision: Orchard, Nathan, Zinman, Cleary.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: The DCCT/EDIC has been supported by U01 cooperative agreement grants (1982-1993 and 2011-2016) and contracts (1982-2011) with the Division of Diabetes Endocrinology and Metabolic Diseases of the National Institute of Diabetes and Digestive and Kidney Disease (grants U01 DK094176 and U01 DK094157), and through support by the National Eye Institute, the National Institute of Neurological Disorders and Stroke, the General Clinical Research Centers Program (1993-2007), and the Clinical Translational Science Center Program (2006-present), Bethesda, Maryland. The following industry contributors provided free or discounted supplies or equipment to support participants’ adherence to the study: Abbott Diabetes Care (Alameda, CA), Animas (Westchester, PA), Bayer Diabetes Care (North America Headquarters, Tarrytown, NY), Becton Dickinson (Franklin Lakes, NJ), Eli Lilly (Indianapolis, IN), Extend Nutrition (St. Louis, MO), Lifescan (Milpitas, CA), Medtronic Diabetes (Minneapolis, MN), Nipro Home Diagnostics (Ft. Lauderdale, FL), Nova Diabetes Care (Billerica, MA), Omron (Shelton, CT), OmniPod Insulin Management System (Bedford, MA), Perrigo Diabetes Care (Allegan, MI), Roche Diabetes Care (Indianapolis, IN), and sanofi-aventis (Bridgewater NJ).
Role of the Sponsor: Representatives of the National Institutes of Health (NIH) and other federal agencies participated in the design and conduct of the study but had no role in the collection, management, analysis, or interpretation of the data; in the preparation, review, or approval of the manuscript; or in the decision to submit the manuscript for publication. Industry contributors had no role in the DCCT/EDIC study.
A complete list of the participants in the DCCT/EDIC Research Group can be found in the supplementary data online published in Diabetes. 2013;62(12):3976-3986.