Hello Everyone,
I'm trying to conduct a couple of power analyses and was hoping someone might
be able to help. I want to estimate the sample size that would be necessary to
adequately power a couple of non-inferiority tests. The first would be a
log-rank test and the second would be a Wilcoxon rank-sum test. I want to be
able to determine the sample size that would be necessary to test for a 3 day
difference in median recovery time between 2 groups of cancer patients.
Both of these tests are infeasible using SAS Proc Power and I haven't been able
to find information about how to do them using either SAS or R.
Does anyone know how to perform either of these calculations? If so, I'd
greatly appreciate it if you could share a couple of examples.
Thanks,
Paul
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