title: UK Renal Registry 15th annual report: Chapter 2 UK RRT prevalence in 2011: national and centre-speciﬁc analyses.
abstract: BACKGROUND
  This chapter describes the characteristics of adult patients on renal replacement therapy (RRT) in the UK in 2011. The prevalence rates per million population (pmp) were calculated for Primary Care Trusts in England, Health and Social Care areas in Northern Ireland, Local Health Boards in Wales and Health Boards (HB) in Scotland (PCT/HB areas).
  
  
  METHODS
  Data were electronically collected from all 71 renal centres within the UK. A series of cross-sectional and longitudinal analyses were performed to describe the demographics of prevalent RRT patients in 2011 at centre and national level. Age and gender standardised ratios for prevalence rates in PCT/ HBs were calculated.
  
  
  RESULTS
  There were 53,207 adult patients receiving RRT in the UK on 31st December 2011. The UK adult prevalence of RRT was 842 pmp. This represented an annual increase in prevalent numbers of approximately 4%, although there was variation between centres and PCT/HB areas. The growth rate from 2010 to 2011 for prevalent patients by treatment modality in the UK was an increase of 1.7% for haemodialysis (HD), a fall of 2.2% for peritoneal dialysis (PD) and an increase of 4.7% with a functioning transplant. There has been a slow but steady decline in the proportion of dialysis patients receiving PD since 2000. In contrast, the number of patients receiving home HD has increased 16% since 2010. Median RRT vintage for patients on HD was 3.3 years, PD 1.8 years and for those patients with a transplant, 10.3 years. The median age of prevalent patients was 58.2 years (HD 66.5 years, PD 62.7 years, transplant 51.7 years) compared to 55 years in 2000. For all ages the prevalence rate in men exceeded that in women, peaking in age group 75-79 years at 2,918 pmp in males. For females the peak was in age group 65-69 years at 1,460 pmp. The most common recorded renal diagnosis was glomerulonephritis (biopsy proven/not biopsy proven) (19%), followed by uncertain (18%). Transplantation was the most common treatment modality (48.6%), HD in 43.9% and PD 7.6%. However, HD was increasingly common with increasing age and transplantation less common.
  
  
  CONCLUSIONS
  The HD and transplant population continued to expand whilst the PD population contracted. There were national, regional and dialysis centre level variations in prevalence rates. Prevalent patients were on average three years older than 10 years ago. This has implications for service planning and ensuring equity of care for RRT patients.
authors.affiliation: UK Renal Registry, Bristol, UK. renalregistry@renalregistry.nhs.uk
authors.forename: Catriona
authors.initials: C
authors.lastname: Shaw
authors.forename: Rishi
authors.initials: R
authors.lastname: Pruthi
authors.forename: David
authors.initials: D
authors.lastname: Pitcher
authors.forename: Damian
authors.initials: D
authors.lastname: Fogarty
mesh_terms: D000368:Aged; D000847:Annual Reports as Topic; D005260:Female; D006306:Health Surveys; D006801:Humans; D007676:Kidney Failure, Chronic / Q000453:epidemiology* / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D009398:Nephrology / Q000706:statistics & numerical data* / Q000639:trends; D015995:Prevalence; D012042:Registries; D017582:Renal Replacement Therapy / Q000706:statistics & numerical data*; D012307:Risk Factors; D006113:United Kingdom / Q000453:epidemiology