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Supplementary Material for: Clinical Management of Chronic Kidney Disease Patients in Italy: Results from the IRIDE Study

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posted on 17.07.2018, 07:03 by Cozzolino M., Bolasco P., Ronco C., Conte G., Menè P., Mereu M.C., Di Luca M., Roccatello D., Rosati A., Jommi C., Costanzo A.M., Gualberti G., di Luzio Paparatti U., Remuzzi G.
Background: Lack of adequate management of chronic kidney disease (CKD) often results in delayed diagnosis and inadequate treatment. This study assessed the clinical management and outcome of stages 1–5 CKD patients. Methods: Patients were prospectively followed for 3 years in 25 nephrology centers across Italy. Clinical characteristics were measured at baseline and every 6 months. Outcome measures included CKD staging, presence of comorbidities, treatment, mineral bone disorder (MBD) parameters, and patient outcomes. Results: Of 884 enrolled patients (59.7% males, aged 66.2 ± 14.6 years), 587 (66.4%) completed the study. The majority of patients were referred by a general practitioner (44.7%) and had stage 3 or 4 CKD (40.9 and 23.8% respectively). Data reveal that 91.3% of patients had at least 1 concomitant disease, most frequently hypertension (80.1%) and dyslipidemia (42.5%); 94.6% of patients were receiving cardiovascular medication and 52.6% were receiving lipid-lowering medication. Approximately 40% of patients had proteinuria and intact parathyroid hormone levels outside the normal range. As expected, stages 4 and 5 CKD patients had a higher prevalence of proteinuria (68 and 74%), MBD (59 and 88%) and anemia (28 and 73%), as well as a higher risk of hospitalization (34.3 and 51.9%) and need for dialysis (69.5 and 70%). The overall probability of survival over 36 months was 90.6%. Conclusions: This is the first Italian prospective study performed with a large cohort of CKD patients over a 3-year period. Considering the multifactorial burden of diseases associated with CKD patients, the need for greater attention to CKD and related disorders is paramount.