NNT Calculator
Compute NNT = 1/|p₁ − p₂| from two event rates.
Input Data
Input Treated rate p₁.
Input Control rate p₂.
Results
5
NNT = 1/|p₁ − p₂|.
At a glance:NNT Calculator: enter parameters to compute results; complements related calculators.
Formula
NNT = 1 / |p₁ − p₂| = 1 / |RD|.
How to Use
- Enter treated and control event rates.
- It returns NNT.
Case Studies
p₁=0.1, p₂=0.3 → NNT=5
|RD|=0.2, NNT = 1/0.2 = 5.
FAQ
Is smaller NNT better?
Yes; a small NNT means a highly effective treatment.
Related Tools
References
Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.