Hello, I would like to ask how the variable DXCHANGE is assigned in the diagnostic summary files. Is it done using information only from the clinical tests like MMSE/CDR/ADAS-Cog? Or is the information from MRI/PET/CSF used as well? Is it procedure documented somewhere?
Thank you.
As we discussed over phone. Clinical, cognitive, and functional testing are primarily used for diagnoses. Imaging is typically not used.