Alzheimer’s Disease Neuroimaging Initiative

Question

Question Posted 05/24/18:
In the Diagnostic Summary [ADNI1,GO,2,3] database, only ADNI1 has DXCONTYP data. I was wondering if there are more DXCONTYP data for ADNIGO,2,3; if so, where could I find them?

Response posted 05/24/18 by Danielle:

The way in which diagnosis information was captured changed during the different phases of ADNI. In ADNI-GO/2 refer to the DXCHANGE variable and in ADNI-3, refer to the DIAGNOSIS variable (both in the Diagnostic Summary where you found DXCONTYP). The Data Dictionary defines the coding.

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Due to serious data quality concerns, all data with PTIDs containing the format 381_S_10### have been removed from the ADNI data repository. ADNI leadership strongly advises that data with these PTIDs not be used in any data analysis, submission of abstracts, or publications. Furthermore, ADNI leadership requests that any abstracts or papers which have been submitted using this data be appropriately revised due to concerns with data quality. More information click here.