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A reader's guide to the evaluation of screening studies.
  1. C. Earle,
  2. P. C. Hebert
  1. Departments of Medicine and Epidemiology, University of Ottawa, Ontario, Canada.


    In this article we will review how a reader should evaluate a screening study. A clinical problem involving screening mammography is presented. We then outline criteria to determine whether screening is appropriate for a given condition. A search for relevant articles is described followed by an outline of the steps used to appraise a screening study critically. An applicable study is examined in detail for such things as the quality of randomisation and outcomes measured. The results of this study are then applied to a patient considered for screening.

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