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Letters Hip arthroplasty endpoints

Paper’s conclusions will only cause confusion

BMJ 2012; 345 doi: (Published 30 October 2012) Cite this as: BMJ 2012;345:e7005
  1. Simon S Jameson, orthopaedic research fellow1,
  2. Paul Baker, specialist registrar in trauma and orthopaedics2,
  3. David Deehan, consultant orthopaedic surgeon3,
  4. Mike Reed, consultant orthopaedic surgeon4,
  5. James Mason, director of research5
  1. 1Durham University, School for Medicine and Health, Stockton on Tees TS17 6BH, UK
  2. 2Northern Deanery, Newcastle upon Tyne, UK
  3. 3Newcastle Hospitals NHS Trust, Newcastle upon Tyne
  4. 4Northumbria Healthcare NHS Trust, Ashington, UK
  5. 5School for Medicine and Health, Durham University, Stockton on Tees, UK
  1. simonjameson{at}

McMinn and colleagues found that long term mortality was highest after cemented hip replacement and lowest with Birmingham hip resurfacing (BHR) after adjusting for age, sex, and American Society of Anesthesiology (ASA) grade.1 Mortality is initially high after hip replacement but returns to baseline 30-60 days after surgery.2 Multivariable modelling of associations with death is therefore appropriate only during …

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