Uniform Data Set version 4
UDSv4 - Template

Reference ID

USDv4

Producer(s)

National Alzheimer’s Coordinating Center (NACC) and the NIA-funded ADRC network

Collections

Clinical Trial

Metadata

DDI/XML JSON

Created on

Jul 02, 2026

Last modified

Jul 07, 2026

Page views

15965

IVP Q21./FVP Q12. ADI state-only decile: (adistate)

Valid: 59

Mean: 22.16

var_std: 5.72

Range: -

Format: Numeric

Notes

Field Note : (If unknown, leave blank. For special codes, enter 884 for "PH", 885 for "GQ", 886 for "PH-GQ", and 887 for "QDI".)

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