Hi Statsplank,
Thank you for your reply. Here is what we are trying to do.
Null hypotheses: the new measurement to predict cancer is same as the conversational method
Alternative hypotheses: The new measurement has a significant higher odds ratio than the conversational method
we are going to recruit 1000 cancer subjects and 3000 controls and would like to calculate the power to detect the significant of higher odds ratio of the new method.
I have email SAS support and been told that at moment, proc power could not calculate this.
If you could think a way to do this that will be great help to us.
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