There is no way to model a missing cell in the FSGD. You'd have to
figure out a value (eg, using imputation) or exclude those subjects
On 11/30/2021 2:59 PM, Laura Willers de Souza wrote:
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Hello FreeSurfer Developers,
I would like to know what I put in the FSGD file for patients who
don't have data for a variable.
In my case, I want to analyze CU (cognitively unimpaired) patients
versus CI (cognitively impaired) patients, controlling for CSF and
plasma cortisol values. And some patients have only the CSF value and
others only the plasma value.
Would the analysis be correct if I put the mean of the non-missing
values of this variable in those cells that don't have data?
Would you be so kind to help me with that?
Thanks in advance!
Laura.
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