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Severity of injury can be assessed on a number of dimensions
  1. John Langley
  1. Correspondence to Emeritus Professor John Desmond Langley, University of Otago, Injury Prevention Research Unit, PO Box 56, Dunedin, Dunedin, Otago 9054, New Zealand; john.langley{at}

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Contrary to what Barry argues1 the paper presenting results from the Prospective Outcomes of Injury Study (POIS)2 is not a contradiction of arguments Colin Cryer and I have advanced against seeking to prevent all injuries irrespective of severity.3 ,4

The methods section of POIS paper clearly states that severity of injury was assessed according to the New Injury Severity Score.2 This is a threat to life assessment. We describe this as an anatomical threat to life measure to distinguish it from measures that are physiologically based.

What the POIS paper demonstrates is …

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  • Competing interests None.

  • Provenance and peer review Not commissioned; internally peer reviewed.