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Abstract A table of exact 95 percent confidence limits for differences and ratios of two proportions and their odds ratio, including one-tailed P values for the Fisher-Irwin exact test, is given for a wide variety of 2 × 2 tables with sample sizes of 20(20)100. The calculations are based on Fisher's 3 conditional theory, and the computer algorithm of Thomas 10 or 11 is used to produce the tables. It is shown how the tables may be used for sample size determination without fixing the power for a given alternative hypothesis.
Thomas et al. (Tue,) studied this question.