Letter to the Editor| Volume 51, e35-e37, May 2018

Hospital mortality scores are unduly influenced by changes in the number of admissions

Published:February 10, 2018DOI:


      • Changes in hospital admissions leads to unexpected changes in hospital mortality score.
      • Increasing admissions via an assessment unit reduce patient acuity and reduce the mortality score.
      • Random removal of casemix due to IT failure also generate changes in the mortality score.
      • A simple chart is used to identify service configuration and other external effects on the mortality score.


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