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

13266

Study Description
Data Dictionary

3. Shopping alone for clothes, household necessities, or groceries (shopping)

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

Overview

Valid: 57

Range: -

Format:

Questions and instructions

Question pretext

[modeb7]<>'0'

Categories

Value	Category	Cases
8	Not applicable (e.g., never did)	9	15.8%
0	Normal	2	3.5%
1	Has difficulty, but does by self	13	22.8%
2	Requires assistance	11	19.3%
3	Dependent	12	21.1%
9	Unknown	10	17.5%

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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