Mortality control charts: Assessment of outcome is complex

BMJ 2003; 326 doi: https://doi.org/10.1136/bmj.326.7403.1397 (Published 19 June 2003) Cite this as: BMJ 2003;326:1397
  1. Frank A Frizelle, professor of colorectal surgery (frank.frizelle@cdhb.govt.nz),
  2. John Frye, surgical registrar
  1. University Department of Surgery, Christchurch Hospital, Riccarton Ave, Christchurch, New Zealand

    EDITOR—Tekkis et al's analysis of two databases for comparing performance of surgical units seems to be an improvement on existing models of risk stratification especially with the recently published annual assessments by the Dr Foster group.1

    Case mix influences outcome of surgery. Surgeons who specialise in colorectal surgery, undertake a disproportionate number of …

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