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Number Needed to Treat (NNT) from Odds Ratio (OR) and Patient Expected Event Rate (PEER)

 

Input
 

PEER		% fraction percent rate ratio
OR		% fraction percent rate ratio

 
Result
 
Important: Inputs must be complete to perform calculation.

 

NNT		# count index logit none number points score
Decimal Precision   0 1 2 3

 

Data action

 
     
 
Include literature references: Yes   No

 

 

 
Equations used
 

NNT = (1 - (PEER * (1 - OR))) / (PEER * (1 - PEER) * (1 - OR))

 

 

References

1. ACP Journal Club. Definitions relating to data presentation in Theraputics. Ann Int Med. 2019; 171:JC24.
2. Fletcher RH, Fletcher SW, Fletcher GS. Clinical Epidemiology The Essentials. 5th edition, Lippincott William & Wilkins Baltimore, 2013. NLMN ID: 101585375