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Uniform Data Set version 4
UDSv4 - Template

United States
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
16001

1. Diagnosis method-responses in this form are based on diagnosis by a: (dxmethod)

Data file: UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml

Overview

Valid: 59
Range: -
Format:

Questions and instructions

Categories
Value Category Cases
1 Single clinician 23
39%
2 Formal consensus panel 2
3.4%
3 Other (e.g., Two or more clinicians or other informal group)Other (e.g., Two or more clinicians or other informal group) 34
57.6%
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
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