The evil twin brother of Number Needed to Treat


Some weeks ago I posted an entry on the NNT(Number Needed to Treat), which is essentially the expected/average number which you would have to give a treatment (surgery, pharmaceutical, or device) at the labeled dose/frequency to receive the labeled benefit.

When you are talking about adverse event risk, the number is NNH(Number Needed to Harm), which is the expected/average number who would have to take a treatment at the labeled dose/frequency to receive the noted adverse effect. You want these numbers to be large.

See “here”:http://www.jr2.ox.ac.uk/bandolier/booth/glossary/NNH.html for more info.

(h/t “Pharmagossip”:http://pharmagossip.blogspot.com)

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