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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
13685

0d1. If 'A1a Social Determinants of Health' form was completed remotely, specify reason (rmreasa1a)

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

Overview

Valid: 59
Range: -
Format:

Questions and instructions

Question pretext
[modea1a]='2'
Categories
Value Category Cases
1 Too cognitively impaired 16
27.1%
2 Too physically impaired 18
30.5%
3 Homebound or nursing home 7
11.9%
4 Refused in-person visit 6
10.2%
5 Other 12
20.3%
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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