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

14720

Raw total GDS Score (loc_raw_nonprorated)

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

Overview

Valid: 56

Mean: 60.71

var_std: 10.11

Range: -

Format: Numeric

Others

Notes

Field Note : <i>(max score=15; did not complete=88)</i>
Calculated : if([nogds] = 1, 88, if(sum([loc_satis_2], [loc_dropact_2], [loc_empty_2], [loc_bored_2], [loc_spirits_2], [loc_afraid_2], [loc_happy_2], [loc_helpless_2], [loc_stayhome_2], [loc_memprob_2], [loc_wondrful_2], [loc_wrthless_2], [loc_energy_2], [loc_hopeless_2], [loc_better_2]) >= 4, 88, sum([loc_satis], [loc_dropact], [loc_empty], [loc_bored], [loc_spirits], [loc_afraid], [loc_happy], [loc_helpless], [loc_stayhome], [loc_memprob], [loc_wondrful], [loc_wrthless], [loc_energy], [loc_hopeless], [loc_better])))

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