Hi everyone,
could anyone please tell me how to do a sample size calculation for the difference between 2 lab tests? see this link for further info on what I want to do
https://www.medcalc.org/manual/sampling_blandaltman.php
Thank you
AM
Hi @ammarhm,
Luckily, the full text of the paper containing the sample size formula is only three mouse clicks away from the MedCalc web page you refer to. The formula is not given in closed form, though. But even if you don't have a SAS/OR license to solve this equation, you can still use a Base SAS implemented solver. I have had positive experiences with macro %Bisect, which is presented in this SESUG 2007 paper.
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