https://communities.sas.com/t5/Statistical-Procedures/power-sample-size-for-cochran-mantel-haenszel/m-p/957648#M47960 <P>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.</P> Wed, 29 Jan 2025 23:06:38 GMT StatDave 2025-01-29T23:06:38Z https://communities.sas.com/t5/Statistical-Procedures/power-sample-size-for-cochran-mantel-haenszel/m-p/957585#M47954 <P>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).</P> Wed, 29 Jan 2025 15:04:00 GMT https://communities.sas.com/t5/Statistical-Procedures/power-sample-size-for-cochran-mantel-haenszel/m-p/957585#M47954 msecic 2025-01-29T15:04:00Z https://communities.sas.com/t5/Statistical-Procedures/power-sample-size-for-cochran-mantel-haenszel/m-p/957648#M47960 <P>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.</P> Wed, 29 Jan 2025 23:06:38 GMT https://communities.sas.com/t5/Statistical-Procedures/power-sample-size-for-cochran-mantel-haenszel/m-p/957648#M47960 StatDave 2025-01-29T23:06:38Z https://communities.sas.com/t5/Statistical-Procedures/power-sample-size-for-cochran-mantel-haenszel/m-p/957650#M47961 You can perform any POWER analysis for any statistic test by data simulation.<BR />Check <a href="https://communities.sas.com/t5/user/viewprofilepage/user-id/13684">@Rick_SAS</a> blogs:<BR /><A href="https://blogs.sas.com/content/iml/2020/08/12/simulation-estimate-power-of-test.html" target="_blank">https://blogs.sas.com/content/iml/2020/08/12/simulation-estimate-power-of-test.html</A><BR /><A href="https://blogs.sas.com/content/iml/2020/08/17/power-curve-parallel-sas-viya.html" target="_blank">https://blogs.sas.com/content/iml/2020/08/17/power-curve-parallel-sas-viya.html</A> Thu, 30 Jan 2025 02:07:58 GMT https://communities.sas.com/t5/Statistical-Procedures/power-sample-size-for-cochran-mantel-haenszel/m-p/957650#M47961 Ksharp 2025-01-30T02:07:58Z