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categorical-tests

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Tests associations between categorical variables in clinical data using chi-square, Fisher's exact, Boschloo, Cochran-Mantel-Haenszel, and modern McNemar variants with calibrated confidence intervals (Wilson, Newcombe, Miettinen-Nurminen). Use when analyzing categorical outcomes, paired binary endpoints, or testing treatment-outcome independence in confirmatory or exploratory clinical trials.

When to use

• analyzing categorical outcomes
• paired binary endpoints
• testing treatment-outcome independence
• confirmatory clinical trials
• exploratory clinical trials
• stratified independent groups
• independent 2x2 tables
• independent RxC tables

When not to use

• continuous variable analysis
• non-categorical outcomes

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