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

11919

Study Description
Data Dictionary

(C2 Q1u/C2T Q1l) Delayed recall -- Category cue (mocarecc)

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

Overview

Valid: 58

Range: -

Format:

Questions and instructions

Question pretext

[mocacomp]='1'

Categories

Value	Category	Cases
0	0	7	12.1%
1	1	19	32.8%
2	2	12	20.7%
3	3	8	13.8%
4	4	2	3.4%
5	5	10	17.2%
88	88 = Not applicable	0	0%

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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