Show Me the Evidence: Using Number Needed to Treat
- 1 September 2007
- journal article
- research article
- Published by Southern Medical Association in Southern Medical Journal
- Vol. 100 (9) , 881-884
- https://doi.org/10.1097/smj.0b013e3180f63246
Abstract
This article reviews one of the basic tools of evidence-based medicine, the calculation and interpretation of Number Needed to Treat (NNT) and Number Needed to Harm (NNH). Especially appealing is the simplicity of extracting this information from journal articles that report binary outcomes, such as medication response or emergence of adverse events. On-line resources and calculators can help the...Keywords
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