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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
11397
  • Study Description
  • Data Dictionary
  • Data files
  • UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml
Variable Groups
  • Form Header
  • Custom Instrument
  • A1 Participant Demographics
  • A1a Social Determinants of Health
  • A2 Co-participant demographics
  • A3 Participant Family History
  • A4 Participant Medications
  • A4a ADRD Specific Treatments
  • A5-D2: Participant Health History/Clinician-assessed Medical Conditions
  • B1 Vital Signs and Anthropometrics
  • B3 Unified Parkinson's Disease Rating Scale (UPDRS) - Motor Exam
  • B4 CDR Dementia Staging Instrument
  • B5 Neuropsychiatric Inventory Questionnaire (NPIQ)
  • B6 Geriatric Depression Scale
  • B7 Functional Assessment Scale (FAS)
  • B8 Neurological Examination Findings
  • B9 Clinician Judgment Of Symptoms
  • C2/C2T Neuropsychological Battery Scores
  • D1a Clinical Syndrome
  • D1b Etiological Diagnosis and Biomarker Support

Data Dictionary

Data file Cases Variables
UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml
60 1686
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