Association between vitamin D deficiency and health-related quality of life in patients with chronic kidney disease from the KNOW-CKD study

• Published in: PloS one 2017-04, Vol.12 (4), p.e0174282-e0174282
• Main Authors: Oh, Tae Ryom, Kim, Chang Seong, Bae, Eun Hui, Ma, Seong Kwon, Han, Seung Hyeok, Sung, Su-Ah, Lee, Kyubeck, Oh, Kook Hwan, Ahn, Curie, Kim, Soo Wan
• Format: Article
• Language: English
• Subjects: 25-Hydroxyvitamin D; Biology and life sciences; Cohort Studies; Dialysis; Ethics; Female; Glomerular Filtration Rate; Health; Hospitals; Humans; Hypertension; Immune system; Infections; Internal medicine; Kidney diseases; Male; Medical schools; Medicine; Medicine and health sciences; Metabolism; Middle Aged; Nephrology; Patients; Peritoneal dialysis; Physical sciences; Quality of Life; Renal Insufficiency, Chronic - blood; Renal Insufficiency, Chronic - complications; Renal Insufficiency, Chronic - epidemiology; Renal Insufficiency, Chronic - physiopathology; Republic of Korea - epidemiology; Social Sciences; Studies; Transplants & implants; Vitamin D; Vitamin D Deficiency - complications; Vitamin deficiency
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0174282

Vitamin D deficiency is a growing health problem in both the general population and in patients with chronic kidney disease (CKD). However, the relationship between serum 25-hydroxyvitamin D levels and health-related quality of life in CKD is not well established. This study examined the association between vitamin D deficiency and quality of life in pre-dialysis CKD patients. Serum 25-hydroxyvitamin D levels and the Korean version of the Kidney Disease Quality of Life short form were obtained for 1844 pre-dialysis CKD patients in the prospective KoreaN cohort Study for Outcomes in patients With Chronic Kidney Disease (KNOW-CKD). The baseline estimated glomerular filtration rate was 50.26 ± 0.71 mL/min/1.73 m2. We identified 1294 (70.2%) patients with vitamin D deficiency, defined as a 25-hydroxyvitamin D level < 20 ng/ml. The scores of the kidney disease component summary, physical component summary, and mental component summary in the vitamin D deficiency group were significantly lower compared to the scores of those without vitamin D deficiency. The serum 25-hydroxyvitamin D level was independently associated with the kidney disease component summary and mental component summary scores (β = 0.147, p = 0.003 and β = 0.151, p = 0.047). In conclusion, there was a significant association between serum 25-hydroxyvitamin D levels and kidney disease component summary and mental component summary scores in pre-dialysis CKD patients.