Dear allstaters
I would be most interested to learn of any suitable formulae which can be used to perform restrospective statistical power calculations based on adjusted odds ratios and sample sizes from a binary logistic regression analysis. Presumably, the recognized formulae used with univariate odds ratios and known sample sizes to calculate statistical power will not work here.
Also, I have an analogous query with respect to the adjusted relative risks obtained from a Cox regression analysis.
Thank you for your interest.
Best wishes
Margaret
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