title: A cohort study on the rate of progression of diabetic chronic kidney disease in different ethnic groups.
abstract: OBJECTIVE
  To compare the rate of progression of diabetic chronic kidney disease in different ethnic groups.
  
  
  METHODS
  Prospective longitudinal observational study.
  
  
  METHODS
  All new patients attending a tertiary renal unit in east London with diabetic chronic kidney disease between 2000 and 2007 and followed up till 2009 were included. Patients presenting with acute end-stage kidney failure were excluded.
  
  
  METHODS
  The primary outcome was annual decline in the estimated glomerular filtration rate (eGFR) in different ethnic groups. Secondary end points were the number of patients developing end-stage kidney failure and total mortality during the study period.
  
  
  RESULTS
  329 patients (age 60±11.9 years, 208 men) were studied comprising 149 south Asian, 105 White and 75 Black patients. Mean follow-up was 6.0±2.3, 5.0±2.7 and 5.6±2.4 years for White, Black and south Asian patients, respectively. South Asian patients were younger and had a higher baseline eGFR, but both systolic and diastolic blood pressures were higher in Black patients (p<0.05). Baseline proteinuria was highest for the south Asian group followed by the White and Black groups. Adjusted linear regression analysis showed that an annual decline in eGFR was not significantly different between the three groups. The numbers of patients developing end-stage kidney failure and total mortality were also not significantly different between the three groups. ACE or angiotensin receptor blockers use, and glycated haemoglobin were similar at baseline and throughout the study period.
  
  
  CONCLUSIONS
  We conclude that ethnicity is not an independent factor in the rate of progression renal failure in patients with diabetic chronic kidney disease.
authors: Department of Nephrology, Royal London Hospital, London, UK.
authors: Omer
authors: O
authors: Ali
authors: Atif
authors: A
authors: Mohiuddin
authors: Rohini
authors: R
authors: Mathur
authors: Gavin
authors: G
authors: Dreyer
authors: Sally
authors: S
authors: Hull
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authors: MM
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