Hi,
You may use the DXSUM_PDXCONV_ADNIALL file.
The variable called "DXDDUE" (suspected cause of dementia) is for ADNIGO, 2, 3.
For ADNI1, some helpful variables are "DXAD", "DXADES" ,"DXAPP" etc.
Please check DATADIC for each variable's coding and its descriptions.
Naomi
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