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

13704

Study Description
Data Dictionary

26. In the past year, how often did you delay seeking medical attention for a problem that was bothering you? (delaymed)

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

Overview

Valid: 54

Range: -

Format:

Questions and instructions

Question pretext

[modea1a] <> '0'

Categories

Value	Category	Cases
1	All of the time	5	9.3%
2	Most of the time	11	20.4%
3	Sometimes	19	35.2%
4	None or almost none of the time	12	22.2%
5	Not applicable	0	0%
8	Prefer not to answer	7	13%

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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