Sample size for NTI using FDA method by excel macro [Power / Sample Size]

posted by d_labes  – Berlin, Germany, 2020-10-16 13:09 (775 d 06:06 ago) – Posting: # 22013
Views: 2,700

Dear dshah!

❝ I would like to know about any available excel tool for sample size calculation for NTI by FDA method.


Sorry but to my knowledge there is no excel tool for sample size calculation for NTI by FDA method.
And I'm quite sure that such a tool is never available.
The FDA method for NTID's is a framework. You have to rely on simulations to do power calculations / sample size estimation. It is hard to imagine that this may be done within excel :no:.

❝ I am asking this as many times- tools like R, Gpower etc. requires installation of software which is not permissible by many firms/organization.


Shit happens :crying:.
Try to convince your boss / IT department that you absolutely need R and the package PowerTOST to do your job. At least if it comes to sample size estimation.

Regards,

Detlew

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