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Supplementary Material for: Cardiovascular and Renal Outcomes in Patients with Type-2 Diabetes and Chronic Kidney Disease Identified in a United States Administrative Claims Database: A Population Cohort Study

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posted on 31.03.2021, 15:54 by Folkerts K., Kelly A.M.B., Petruski-Ivleva N., Fried L., Blankenburg M., Gay A., Velentgas P., Kovesdy C.P.
Introduction: CKD, a common complication of type-2 diabetes (T2D), causes considerable disease burden. Patients with T2D and CKD are considered high-risk for complications; however, studies describing patients with T2D and incident CKD identified from real-world data using the diagnostic gold-standard criteria – estimated glomerular filtration rate and urine albumin-to-creatinine ratio (UACR) – are scarce. Methods: In this population-based cohort study, we sought to estimate the rates of cardiovascular and renal outcomes among patients with T2D and CKD by comorbidity subgroups and CKD severity. Patients were sampled between 2008 and 2017 from de-identified US administrative claims enriched with laboratory data. Analyses were stratified by prevalent heart failure (HF), anemia, and resistant hypertension and the KDIGO categories at index. Results: We identified 106,369 patients with T2D and incident CKD. The rate of all-cause hospitalization was 189 [95% CI: 187, 191] per 1,000 person-years with cardiovascular-related hospitalizations being more frequent than kidney-related outcomes. The rate of acute kidney failure was 77.3 [95% CI: 76.2, 78.5] per 1,000 person-years. Patients with HF experienced a 4-times higher rate for cardiovascular events compared to those without. Rates of hospitalization increased from 5- to 6-fold with increasing KDIGO severity. Conclusions: Multimorbidity and advance stages of CKD increase the risk of cardiovascular and renal complications among patients with T2D diabetes. Earlier CKD diagnosis as well as interventions and coordinated care addressing other comorbid conditions present at diagnosis may reduce the overall disease burden in this population.

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