Vitamin D insufficiency, defined as serum 25-hydroxyvitamin (OH) D level less than 30 ng/ml, is highly prevalent not only in the general population but also in chronic kidney disease (CKD) population. Many guidelines including the National Kidney Foundation-Kidney Disease Outcomes Quality Initiative (NKF-KDOQI) have consistently recommended vitamin D supplementation in patients with pre-dialysis CKD with vitamin D insufficiency with ergocalciferol or cholecalciferol to achieve 25(OH)D level of more than 30 ng/ml using serum levels-based titration regimen. However, this protocol has not been studied in end stage kidney disease patients treated with maintenance dialysis.
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proportion of patients with vitamin D adequacy
Timeframe: 6 months