Intended for healthcare professionals


Computer software that can calculate confidence intervals is now available

BMJ 1995; 310 doi: (Published 13 May 1995) Cite this as: BMJ 1995;310:1269
  1. Iain E Buchan
  1. Honorary lecturer Department of Medicine, University of Liverpool, PO Box 147, Liverpool L69 3BX

    EDITOR,—Richard J Cook and David L Sackett usefully show applications of the number needed to treat statistic for clinical decision making.1 Confidence intervals are an important aid to meaningful inference from this statistic.2 Mention in the paper of the construction of …

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