Letter

Differences in mortality after fracture of hip

BMJ 1995; 311 doi: 10.1136/bmj.311.7011.1025b (Published 14 October 1995)
Cite this as: BMJ 1995;311:1025.3

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  1. C J Todd,
  2. Chris Palmer,
  3. C Camilleri-Ferrante,
  4. C J Freeman,
  5. C E Laxton,
  6. M J Parker,
  7. B V Payne,
  8. N Rushton
  1. Director Medical statistician Department of Community Medicine, Institute of Public Health, University of Cambridge, Cambridge CB2 2SR
  2. Consultant in public health medicine Research/audit assistant Senior registrar Directorate of Public Health Medicine, Anglia and Oxford Regional Health Authority, Cambridge
  3. Research registrar Department of Orthopaedics, Peterborough District Hospital, Peterborough PE3 6DA
  4. Consultant Department of Medicine for the Elderly, Norfolk and Norwich Healthcare NHS Trust, Norwich NR1 3SR
  5. Consultant orthopaedic surgeon Orthopaedic Research Unit, University of Cambridge Clinical School, Addenbrooke's Hospital, Cambridge CB2 2QQ

    EDITOR,--C R Packham1 suggests that case mix may have been responsible for the variation among hospitals in 90 day mortality after admission for fractured hip that we reported.2 The possibility that patients' characteristics may explain differences in outcome is the reason why a multivariate analysis was necessary. Clearly, such an analysis has to be limited to those factors for which information is available, and our prospective audit, like any other study, could not record every conceivable potentially explanatory factor. This …

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