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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
14243

 1j. In the past 12 months, how often has the participant consumed cannabis (edibles, smoked, or vaporized)? (cannabis)

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

Overview

Valid: 55
Range: -
Format:

Questions and instructions

Categories
Value Category Cases
0 Never 5
9.1%
1 Monthly or less 11
20%
2 2-4 times a month 11
20%
3 2-3 times a week 9
16.4%
4 4 or more times a week 6
10.9%
9 Unknown 13
23.6%
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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