Sample Sizes for Comparing Two Independent Proportions Using the Continuity-Corrected Arc Sine Transformation
Journal of the Royal Statistical Society Series D (The Statistician)Published 1 January 1986
Annette J. Dobson, Val Gebski
Citations31
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Abstract
The continuity-corrected arc sine transformation for binomial variates (Walters, 1979) provides a simple and accurate method for calculating power for the exact test for a 2 x 2 contingency table. Sample size calculations using this method, however, require iteration. A modification is presented which yields accurate approximations for equal and unequal sample sizes using closed-form expressions.
Keywords
Mathematics
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