Question

Question Posted 07/23/14:
Hi - Why are there some patients with a DX_bl value of LMCI or EMCI that also have a DX for a baseline visit (VISCODE = "bl") of "Dementia"? For example, in the ADNIMERGE table, patient 332 has a DX_bl of LMCI but a DX of Dementia for his baseline visit. Thanks
Response posted 07/29/14 by Mike:
DX_bl is actually the screening diagnosis. This subject was screened LMCI, but was found to have dementia at baseline.