Bmj Usa: Letter


BMJ 2003; 327 doi: (Published 19 November 2003) Cite this as: BMJ 2003;327:E177
  1. Simon Brewster, consultant urologist (,
  2. Mark Feneley, consultant urologist,
  3. Roger Kirby, professor of urology
  1. Churchill Hospital, Oxford, UK
  2. Institute of Urology and Nephrology, Middlesex Hospital, London, UK
  3. St George's Hospital, London, UK

    From BMJ USA 2002;Dec:660

    EDITOR—This “natural experiment” is a retrospective comparison of mortality in Seattle and Connecticut, where prostate cancer screening practice has differed. The findings cannot confirm that screening has no impact on mortality, because this question cannot be adequately addressed by a study of …

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