The epidemiology of native renal biopsy in Scotland 20022006

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The epidemiology of native renal biopsy in
Scotland 2002-2006

• Emily Fraser, Bruce Mackinnon, Lynsey F Yeoman,
  Keith Simpson, Jonathan G Fox, Barbara Young,
  Stewart Fleming, Graham Stewart, Stuart Gardiner,
  Paul Brown, Stewart Lambie, Colin Geddes

On behalf of the Scottish Renal Biopsy Registry
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Aims

• Establish incidence of adult native renal biopsy
  in Scotland in the last 5 years
• Analyse the age and gender profile
• Compare practice between different units
• International comparison

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Data collection

• 7 centres
• Data from renal pathologist in each centre
• Consecutive adult native renal biopsies performed
  between 2002 and 2006
• Sex and age of patient at time of biopsy
• Population values from 2001 census

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Results

• 2369 native biopsies
• 126.8 biopsies per million population per year
  (PMP/yr)
• 7 centres covering 3.8 million people (75.1 of
  population)
• Glasgow and Clyde (GC)
• Tayside (Tay)
• Dumfries and Galloway (DG)
• Ayrshire and Arran (AA)
• Lanarkshire (Lan)
• Grampian (Gramp)
• Highland (High)

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Overall biopsies in Scotland PMP
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Average biopsy incidence in each centre
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Biopsy incidence by centre 2002-2006
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Average proportion of males undergoing biopsy
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Average age of patients undergoing biopsy
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Summary of data

• Biopsy incidence stable over the 5y period
• Incidence stable within centres, although
  incidence varies between centres
• The majority of centres biopsy more men
• Centres biopsy patients of a similar age

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International comparison
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Conclusions

• Differences in biopsy incidence between centres
  in Scotland
• Concordance between centres with respect to age
  and sex of patients biopsied
• Overall higher rate than other European countries
• Further study required to establish if difference
  in disease incidence or nephrologist practice