We have 60 subjects, and with no defined control group - we expect to
regress several different clinical and psychometric parameters between the
subjects to see what falls out.
With this in mind, do I have to make the template from ALL of the cases?
This looks like it would be a big and very long computational task. Is it
reasonable to make the template from a smaller subset, selected randomly? If
so, how many subjects would be OK?
Thx
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