Hi, I am doing a sample size calculation for Fisher's exact test. Here are the details: 5% probability of success in the control group. 85% probability of success in the intervention group. For a sample size of 8 per group, proc power gives me a power of 0.851 Other software (R, nQuery and even simulation) gives 93%. Anyone knows why sas gives a different answer? My experimental units are very expensive and I would like to use no more than is absolutely necessary. Thanks!
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