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Number needed to treat (NNT)
1Emergency Medicine and Trauma Center, Methodist Hospital, Clarian Health Partners, Indiana University School of Medicine, Indianapolis, IN, USA.
Annals of Emergency Medicine
|March 27, 1999
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.