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Was Rodney Ledward a statistical outlier?:Statistical method may be difficult to apply in clinical practice

BMJ 2005; 330 doi: (Published 16 June 2005) Cite this as: BMJ 2005;330:1448
  1. Benjamin J Cowling, senior research assistant (,
  2. Anthony J Hedley, chair professor
  1. Department of Community Medicine, University of Hong Kong, Hong Kong SAR, China

    EDITOR—Harley et al make an interesting proposal for retrospectively detecting outliers.1 However, we think that, as presented, the method may be quite difficult for clinical audit teams to understand and apply in routine practice.

    It might be helpful to think in terms of test statistics. For each consultant in each year, …

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