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Question

Question Posted 02/20/22:
Hello.
How do I determine the individuals officially enrolled in ADNI-2, ADNI-GO , and ADNI-3? Thank you

Response posted 02/21/22 by Danielle:

For newly recruited participants, RID is in the 2000s for ADNI-GO, 4000s and 5000s in ADNI-2 and 6000s in ADNI-3. There are participants that continue on from earlier stages of ADNI into later stages, so you can either determine they are in a later stage by VISCODE (or VISCODE2) or some files (such as ADNIMERGE) include a variable called COLPROT which defines the protocol for that visit.

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