title: The Dialysis Outcomes and Practice Patterns Study (DOPPS) in Turkey.
abstract: Turkey has one of the largest treated end-stage renal disease (ESRD) patient populations in Europe (N = 66,711). In 2013, the international Dialysis Outcomes and Practice Patterns Study (DOPPS), a prospective study of hemodialysis (HD) practices and outcomes, initiated data collection in Turkey. Here we provide comparisons of HD patients in DOPPS-Turkey with other international regions and with patients in the Registry of Turkish Nephrology, Dialysis and Transplantation.
  
  
  
  DOPPS-Turkey study sites were randomly selected from all Turkish HD units treating ≥25 in-center chronic HD patients. Detailed patient- and facility-level data were collected for 20-30 randomly selected prevalent HD patients per facility.
  
  
  
  Demographic and comorbidity profiles for DOPPS-Turkey patients were similar to HD patients overall in the 2013 Turkish Registry Report. In Turkey: diabetes was the most common ESRD cause (37%); arteriovenous fistula use was 83%; mean single pool Kt/V was 1.61. Compared with other international regions, Turkey had the highest mean hemoglobin (11.5 g/dL), ferritin (771 ng/mL), and interdialytic weight gain (3.28%), while Turkey had the lowest mean systolic blood pressure (127 mmHg) and erythropoiesis stimulating agent prescription (57%). Turkish patients also reported the highest depression scores.
  
  
  
  In this first DOPPS-Turkey report, the DOPPS sample agrees well with national Turkish Registry data. Treatment and laboratory data, and patient-reported outcomes, demonstrate similarities and previously unrecognized contrasts to DOPPS findings in Europe, Japan, and North America. Long-term follow-up of these patients will describe how these differences relate to clinical outcomes within Turkey.
authors: Istanbul Bilim University Faculty of Medicine, Istanbul, Turkey.
authors: Tevfik
authors: T
authors: Ecder
authors: Emsey Hospital, Istanbul, Turkey.
authors: Cengiz
authors: C
authors: Utas
authors: Ankara University Faculty of Medicine, Ankara, Turkey.
authors: Kenan
authors: K
authors: Ates
authors: Arbor Research Collaborative for Health, Ann Arbor, USA.
authors: Brian
authors: B
authors: Bieber
authors: Arbor Research Collaborative for Health, Ann Arbor, USA.|University of Michigan, Ann Arbor, USA.
authors: Bruce M
authors: BM
authors: Robinson
authors: Arbor Research Collaborative for Health, Ann Arbor, USA.
authors: Ronald L
authors: RL
authors: Pisoni
authors: Akdeniz University Faculty of Medicine, Antalya, Turkey.
authors: Gültekin
authors: G
authors: Süleymanlar
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000628:therapy; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D006435:Renal Dialysis / Q000379:methods / Q000592:standards*; D014421:Turkey
keywords: Chronic hemodialysis; chronic renal failure; dialysis; end-stage renal disease; hemodialysis