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Number Needed to Treat (NNT)

Authors
Journal
Annals of Emergency Medicine
0196-0644
Publisher
Elsevier
Publication Date
Volume
33
Issue
4
Identifiers
DOI: 10.1016/s0196-0644(99)70308-2
Disciplines
  • Medicine

Abstract

Abstract Because decisions regarding therapy are so common in clinical practice, the application of number needed to treat (NNT) is one of the most important evidence-based medicine skills to be acquired. NNT provides a clinically useful “yardstick” of the effort required to have a beneficial outcome or prevent a bad outcome with a therapy. A brief overview of the concept, derivation, and application of NNT is presented.[Cordell WH: Number needed to treat (NNT). Ann Emerg Med April 1999;33:433-436.]

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