Welcome to the UBC Clinical Significance Calculator
Instructions: Input the data in the fields below as decimals, e.g. 0.3, for the event rates and as integers, e.g. 320, for the numbers of patients. Then hit calculate. If you make an error, hit reset.
Rate of events in the experimental arm:
Number of patients in the experimental arm:
Rate of events in the control arm:
Number of patients in the control arm:
Output Fields
CLINICAL SIGNIFICANCE MEASURE
Value
Lower 95% confidence boundary
Upper 95% confidence boundary
Absolute Risk Reduction (ARR):
Relative Risk Reduction (RRR%):
Odds Ratio:
Number Needed to Treat (NNT):