Confidence Intervals for Proportions and Related Parameters (RMD) Confidence Intervals for Proportions and Related Parameters (PDF) Pearson's Chi Square Test of Independence (RMD) Pearson's Chi Square Test of Independence (PDF) Breslow-Day and Cochran-Mantel-Haensel Tests (RMD) Breslow-Day and Cochran-Mantel-Haensel Tests (PDF) Categorical Data Analysis: R Files