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
16101
(C2 Q13f/C2T Q13e) . Recognition -- Total false positive (reyfpos)
Data file: UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml
Overview
Valid:
57
Range:
-
Format:
Questions and instructions
Question pretext
([reydrec] < 94 and [reydrec]<>"")
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 6 |
10.5%
|
| 1 | 1 | 5 |
8.8%
|
| 2 | 2 | 5 |
8.8%
|
| 3 | 3 | 4 |
7%
|
| 4 | 4 | 2 |
3.5%
|
| 5 | 5 | 2 |
3.5%
|
| 6 | 6 | 1 |
1.8%
|
| 7 | 7 | 3 |
5.3%
|
| 8 | 8 | 4 |
7%
|
| 9 | 9 | 5 |
8.8%
|
| 10 | 10 | 3 |
5.3%
|
| 11 | 11 | 1 |
1.8%
|
| 12 | 12 | 4 |
7%
|
| 13 | 13 | 1 |
1.8%
|
| 14 | 14 | 3 |
5.3%
|
| 15 | 15 | 2 |
3.5%
|
| 95 | 95 = Physical Problem | 4 |
7%
|
| 96 | 96 = Cognitive/Behavior Problem | 0 |
0%
|
| 97 | 97 = Other Problem | 2 |
3.5%
|
| 98 | 98 = Verbal Refusal | 0 |
0%
|
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.
Others
Notes
Field Note : (0 -15, 95-98)