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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
15163

4a. Limb apraxia {loc_limbaprax_lastvis} (limbaprax)

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

Overview

Valid: 55
Range: -
Format:

Questions and instructions

Question pretext
[othersign]='1'
Categories
Value Category Cases
0 Absent 5
9.1%
1 Focal or Unilateral 5
9.1%
2 Bilateral & Largely Symmetric 26
47.3%
3 Bilateral & Largely Asymmetric 12
21.8%
8 Not Assessed 7
12.7%
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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