Bioequivalence and Bioavailability Forum

Dear Emrah!

❝ As a final step LSMean(i)-LSMean(j) values should be antilogged and multiplied with 100 to obtain upper and lower limits.

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❝ What I wonder is how may I code this last step so that it can be included in the SAS Output. Any help will be appreciated.

The short answer: Ask your big SAS fan .

To be serious:
I suppose you are using Proc GLM.
Place an ODS output statement before or within the Proc GLM code.
Something like:

ODS output LSMeanDiffCL=whatever_you_like_as_name;

Take the dataset whatever_you_like_as_name and perform the back-transformation.
The relevant varibles are diff, lowerCL, upperCL if I recall correctly. Take care of the order of treatm the diff and its CI will be calculated and change sign if necessary.

A simple Proc Print call will show you the results.

BTW: How did you arrive at T-R (i=2, j=1)? Mine is always R-T if treatm is coded that way due to lexical ordering.

Hope this helps