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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
12665

3c. Race - Black - Countries (loc_black)

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

Overview

Valid: 37
Range: -
Format:

Questions and instructions

Question pretext
[loc_raceblack(1)] = 1
Categories
Value Category Cases
1 3c1. African American 10
27%
2 3c2. Jamaican 6
16.2%
3 3c3. Haitian 2
5.4%
4 3c4. Nigerian 6
16.2%
5 3c5. Ethiopian 8
21.6%
6 3c6. Somali 1
2.7%
7 3c7. Other (For example 4
10.8%
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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