power/sample size for cochran mantel haenszel

[msecic]

Can someone provide an example of how to calculate power/sample size for cochran mantel haenszel? The response variable is binary and there are two stratum (one has 3 levels and the other is binary).

[StatDave]

I'm not aware of a way to do a power analysis specifically for the CMH test. However, since your response is binary, you could instead take a model-based approach to the same sort of test by using a logistic model with your stratifying variables as predictors in the model. For this approach you could get a power analysis using the LOGISTIC statement in PROC POWER. See the discussion and examples in the POWER documentation.

[Ksharp]

You can perform any POWER analysis for any statistic test by data simulation.
Check @Rick_SAS blogs:
https://blogs.sas.com/content/iml/2020/08/12/simulation-estimate-power-of-test.html
https://blogs.sas.com/content/iml/2020/08/17/power-curve-parallel-sas-viya.html