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variable [loc_tbidxif]
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
15846
Study Description
Data Dictionary
Data files
UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml
tbidxif primary? (loc_tbidxif)
Data file:
UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml
Overview
Valid:
47
Range:
-
Format:
character
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