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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
12152

5. In the past 30 days, how often has a lack of transportation kept you from medical appointments or from doing things needed for daily living? (trspmed)

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

Overview

Valid: 54
Range: -
Format:

Questions and instructions

Question pretext
[modea1a] <> '0'
Categories
Value Category Cases
1 Often 14
25.9%
2 Sometimes 12
22.2%
3 Never 12
22.2%
8 Prefer not to answer 16
29.6%
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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