// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
sci.number-needed-to-treat-NNT Calculator
Calculates number needed to treat (NNT = 1/ARR) from control and treatment event rates and the absolute risk reduction (ARR). NNT = 1 means every patient benefits; NNT = 50 means treating 50 patients prevents one event — statins for primary prevention have NNT ≈ 50–100 over 5 years.
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
number needed to treat NNT
The value at the specified point or condition.
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 reduction RRR
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.