Difference Between Two Proportions (Unpaired) Program

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Related Links:
Unpaired Proportions Explained Page
Sample Size for Comparison of Two Proportions Program Page

Program References

Chi Square :
          
Fisher's Exact Probability :
          
Risk Difference (Standard) :
          
Risk Difference (Exact) :
          
Risk Ratio (Relative Risks) :
          
Odds Ratio :
          
Data input for Chi Square and Fisher's Exact probability Test : Data in 4 columns
  • Each row a separate study
  • Column 1 : number of cases in Group 1 with positive attributes (Pos1)
  • Column 2 : number of cases in Group 2 with positive attributes (Pos2)
  • Column 3 : number of cases in Group 1 with negative attributes (Neg1)
  • Column 4 : number of cases in Group 2 with negative attributes (Neg2)
Data input for Risk Difference, Risk Ratio, and Odds Ratio : Data in 5 columns
  • Each row a separate study
  • Column 1 : number of cases in Group 1 with positive attributes (Pos1)
  • Column 2 : number of cases in Group 2 with positive attributes (Pos2)
  • Column 3 : number of cases in Group 1 with negative attributes (Neg1)
  • Column 4 : number of cases in Group 2 with negative attributes (Neg2)
  • Column 5 : Percent of confidence intervals (usually 95)