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

16330

Study Description
Data Dictionary

Number of secondary items greater than memory (loc_b4_calc_gtmem)

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

Overview

Valid: 44

Mean: 45.75

var_std: 8.79

Range: -

Format: Numeric

Others

Notes

Calculated : sum( if([memory]<[orient],1,0) , if([memory]<[judgment],1,0) , if([memory]<[commun],1,0) , if([memory]<[homehobb],1,0) , if([memory]<[perscare],1,0) )

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