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

13143

6. Are you afraid that something bad is going to happen to you? (loc_afraid_2)

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

Overview

Valid: 43

Mean: 5.28

var_std: 1.10

Range: -

Format: Numeric

Others

Notes

Calculated : if([afraid]<>"", if([afraid] = 9, 1, 0),"")

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