Background: The primary objectives of this U.S.-based multi-center study were to examine 5-year trends in mean Body Mass Index (BMI) and sociodemographic profiles of overweight and obese adults with type 1 diabetes (T1D).

Methods: We analyzed electronic health record data from 2016 to 2020 for all adults (N = 4763 in 2016 and N = 5489 in 2020) seeking care at eight participating endocrinology clinics in the T1D Exchange QI Collaborative. Patients were classified as overweight and obese if they had a BMI (kg/m2) of 25 to <30, or ≥30, respectively.

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