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Power calculator for Comparison of proportions

Input
Required alpha level (P): 
Observed first proportion (%): 
Observed second proportion (%): 
Sample size in group 1: 
Sample size in group 2: 

How to cite this page

  • MedCalc Software Ltd. Power calculator for Comparison of proportions | MedCalc. https://www.medcalc.org/en/calc/power-comparison-of-proportions.php (Version 23.6.1; accessed July 14, 2026)
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