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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
16105

(C2 Q5b/C2T Q4b) Longest span forward (digforsl)

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

Overview

Valid: 60
Range: -
Format:

Questions and instructions

Question pretext
[digforct]<15 and [digforct] <>""
Categories
Value Category Cases
0 0 11
18.3%
3 3 5
8.3%
4 4 11
18.3%
5 5 9
15%
6 6 6
10%
7 7 4
6.7%
8 8 10
16.7%
9 9 4
6.7%
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.

Others

Notes
Field Note : (0, 3-9)
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