Intended for healthcare professionals


Strange things happen when we never qualify the frequency

BMJ 2006; 333 doi: (Published 07 September 2006) Cite this as: BMJ 2006;333:550
  1. John C Chambers, Macmillan consultant (
  1. Katharine House Hospice, Adderbury, Oxfordshire OX17 3NL

    EDITOR—Aronson illustrated that the definition of frequency qualifiers cannot be taken for granted.1 However, we often omit them completely as we condense complex research findings into terse one liners. This can dramatically distort our perception of risk.

    For example, nobody …

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