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
Created on
Jul 02, 2026
Last modified
Jul 07, 2026
Page views
13613
8a-l. Select the predominant syndrome as present; all others will default to Absent in the NACC database. (loc_predomsynpres)
Data file: UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml
Overview
Valid:
57
Range:
-
Format:
Questions and instructions
Question pretext
[predomsyn]='1'
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 8a | 8a. Amnestic predominant syndrome | 2 |
3.5%
|
| 8b | 8b. Dysexecutive predominant syndrome | 7 |
12.3%
|
| 8c | 8c. Primary visual presentation (such as posterior cortical atrophy (PCA) syndrome) | 7 |
12.3%
|
| 8d | 8d. Primary progressive aphasia (PPA) syndrome | 4 |
7%
|
| 8e | 8e. Behavioral variant frontotemporal (bvFTD) syndrome | 6 |
10.5%
|
| 8f | 8f. Lewy body syndrome | 6 |
10.5%
|
| 8g | 8g. Non-amnestic multidomain syndrome, not PCA, PPA, bvFTD, or DLB syndrome | 7 |
12.3%
|
| 8h | 8h. Primary supranuclear palsy (PSP) syndrome | 1 |
1.8%
|
| 8i | 8i. Traumatic encephalopathy syndrome | 8 |
14%
|
| 8j | 8j. Corticobasal syndrome (CBS) | 6 |
10.5%
|
| 8k | 8k. Multiple system atrophy (MSA) syndrome | 1 |
1.8%
|
| 8l | 8l. Other | 2 |
3.5%
|
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.