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USDV4
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
11402
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
Variable Groups
Variable group: B7 Functional Assessment Scale (FAS)
Variables
18
b7_functional_assessment_sc
ale_fas_complete
Complete?
b7not
0d2. If 'B7 Functional Assessment: FAS' not submitted, specify reason
bills
1. Writing checks, paying bills, or balancing a checkbook
events
7. Keeping track of current events
frmdateb7
0a. B7 Functional Assessment: FAS - Form date
games
4. Playing a game of skill such as bridge or chess, working on a hobby
initialsb7
0b. B7 Functional Assessment: FAS - Examiner's initials
langb7
0c. B7 Functional Assessment: FAS - Language
mealprep
6. Preparing a balanced meal
modeb7
0d. B7 Functional Assessment: FAS - In-person, remote, or not completed?
payattn
8. Paying attention to and understanding a TV program, book, or magazine
remdates
9. Remembering appointments, family occasions, holidays, medications
rmmodeb7
0d1a. What modality was used to collect this remote 'B7 Functional Assessment: FAS' form?
rmreasb7
0d1. If 'B7 Functional Assessment: FAS' form was completed remotely, specify reason
shopping
3. Shopping alone for clothes, household necessities, or groceries
stove
5. Heating water, making a cup of coffee, turning off the stove
taxes
2. Assembling tax records, business affairs, or other papers
travel
10. Traveling out of the neighborhood, driving, or arranging to take public transportation
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