// multi-utility computation suite · offline · instant · precise
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health.NNT-NNH-clinical Calculator
Calculates Number Needed to Treat (NNT) and Number Needed to Harm (NNH) from absolute risk reduction and absolute risk increase. NNT of 10 means treating 10 patients prevents 1 adverse event; NNH of 50 means 50 must be treated to harm 1 — the ratio NNT/NNH governs net benefit.
Inputs
Eer Pct
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Cer Pct
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Results
NNT — number needed to treat
The value at the specified point or condition.
NNH — number needed to harm
Sample size or count used in the calculation.
absolute risk reduction ARR
Overall risk level based on the computed score or classification. Higher risk may call for mitigating actions or additional review.
relative risk RR
Overall risk level based on the computed score or classification. Higher risk may call for mitigating actions or additional review.
relative risk reduction RRR
Overall risk level based on the computed score or classification. Higher risk may call for mitigating actions or additional review.