Epidemiology-renaloutcomes sp 200 tabuk formula : a modified ckd-epi formula improves predicting gfr in saudi population

Introduction and Aims: Tabuk people has lower body mass index (BMI) and body surface area (BSA) than U.S. CKD-EPI formula was developed for estimation of GFR in Americans, but its accuracy in Tabuk people indicated adjustment of this formula is crucial. Aim: Is to adjust CKD-EPI formula and compare performance of tailored CKD-EPI formula (Tabuk formula) with the original CKD-EPI using isotopic GFR (iGFR) as a reference. Methods: The study included 226 person, 69 diabetics; males 141, age 47±12 years, body weight 65±7 Kg, BSA 1.7±0.1 m; BMI 23±3 Kg/m. creatinine 2.5±1 mg/dl, BUN 34±15 mg/dl, iGFR 41±22 ml/min/1.73m. As BMI in data provided by CKD-EPI collaborators (28±6 kg/m) is very high than BMI of Tabuk people (23±3 kg/m). So, we assumed accuracy of CKD-EPI formula may be improved by adding a corrective