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OBJECTIVE To compare races/ethnicities for characteristics, at type 1 diabetes diagnosis and during the first 3 years postdiagnosis, known to influence long-term health outcomes. RESEARCH DESIGN AND METHODS We analyzed 927 Pediatric Diabetes Consortium (PDC) participants 19 years old (631 non-Hispanic white NHW, 216 Hispanic, and 80 African American AA) diagnosed with type 1 diabetes and followed for a median of 3.0 years (interquartile range 2.2–3.6). Demographic and clinical data were collected from medical records and patient/parent interviews. Partial remission period or “honeymoon” was defined as insulin dose–adjusted hemoglobin A1c (IDAA1c) ≤9.0%. We used logistic, linear, and multinomial regression models, as well as repeated-measures logistic and linear regression models. Models were adjusted for known confounders. RESULTS AA subjects, compared with NHW, at diagnosis, were in a higher age- and sex-adjusted BMI percentile (BMI%), had more advanced pubertal development, and had higher frequency of presentation in diabetic ketoacidosis, largely explained by socioeconomic factors. During the first 3 years, AA subjects were more likely to have hypertension and severe hypoglycemia events; had trajectories with higher hemoglobin A1c, BMI%, insulin doses, and IDAA1c; and were less likely to enter the partial remission period. Hispanics, compared with NHWs, had higher BMI% at diagnosis and over the three subsequent years. During the 3 years postdiagnosis, Hispanics had higher prevalence of dyslipidemia and maintained trajectories of higher insulin doses and IDAA1c. CONCLUSIONS Youth of minority race/ethnicity have increased markers of poor prognosis of type 1 diabetes at diagnosis and 3 years postdiagnosis, possibly contributing to higher risk of long-term diabetes complications compared with NHWs.
Redondo et al. (Thu,) studied this question.