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)

Altman D (1994) Practical Statistics for medical Research. Chapman Hall, London. ISBN 0 412 276205 (First Ed. 1991)

• Chi square : p.252
• Fisher's Exact probability : p.233

Altman GD, Machin D, Bryant TN, Gardner MJ (2000) Statistics with confidence (2nd Ed). BMJ Books ISBN 0 7279 1375 1

• Odds ratio : p.60-62
• Relative risks : p.57-59
• Risk difference : p.233