Intended for healthcare professionals


Was Rodney Ledward a statistical outlier?:Initial investigations of outliers must be chosen carefully

BMJ 2005; 330 doi: (Published 16 June 2005) Cite this as: BMJ 2005;330:1448
  1. C Kevin Connolly, retired physician (
  1. Aldbrough St John, Richmond, North Yorkshire DL117TP

    EDITOR—In their paper investigating whether Rodney Ledward was a statistical outlier Harley et al do not define what they mean by statistical outlier.1 If it is a person whose outlying position in the distribution is almost certainly not due to chance, then they have …

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