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

15904

1b3. Father -- Primary Dx (dadetpr)

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

Overview

Valid: 0

Range: -

Format:

Questions and instructions

Categories

Value	Category
00	No known neurological/psychiatric diagnosis
01	Alzheimer's Disease
02	Lewy Body dementia (includes DLB and PDD)
03	Vascular dementia
04	Stroke
05	FTLD* without motor neuron disease
06	FTLD* with motor neuron disease
07	Motor Neuron Disease
08	Parkinson's Disease
09	Prion pathology
10	Psychiatric condition
11	Dementia of unknown etiology
12	Other
66	Provided at previous visit
99	Specific diagnosis unknown (acceptable if method of evaluation is not by exam or autopsy)

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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