Stratifying patients by perioperative risk is equivalent to screening

BMJ 1996; 313 doi: https://doi.org/10.1136/bmj.313.7059.750a (Published 21 September 1996) Cite this as: BMJ 1996;313:750
  1. Simon Howell, Clinical lecturer,
  2. Pierre Foex, Nuffield professor
  1. Nuffield Department of Anaesthetics, John Radcliffe Hospital, Oxford OX3 9DU

    EDITOR,—N Mamode and colleagues are correct when they state that studies of the risk of perioperative myocardial infarction are needed.1 Their study goes some way to meeting this need. The way in which they present their data, however, makes it difficult to draw useful conclusions. The results of tests of association (χ2 and Fisher's exact tests) are shown, but no indication is given of the relative risk associated with each risk factor, and no adjustment …

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