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Federal dataDemographics
Sample Characteristics
Published by National Center for PTSD · Updated 09/30/2026 · Yearly
- Last updated
- 09/30/2026
- First published 04/24/2026
- Update frequency
- Yearly
- Formats
- 3
- JSON, XML, CSV
- Coverage
- Nationwide
- Federal data
About this dataset
The Sample Characteristics dataset includes information on the participants who are included in the studies. This information is provided at the study level-meaning, data are not broken down into the specific treatment arms such as the intervention or control groups. Use this dataset if you want to learn more about the number of participants in the study; inclusion and exclusion criteria; baseline clinical characteristics such as PTSD severity, trauma type, military status, and comorbidities; and, basic demographic information such as age, sex, or race/ethnicity for the sample as a whole (not individual participants). Values reported as "NA" or not reported "NR" by the study are null values (empty cells).
Files and access
Links open the official government source
Links open outside websites we do not control.
Frequently asked questions
- Who publishes Sample Characteristics?
- National Center for PTSD, part of Department of Veterans Affairs, publishes this dataset on Data.gov.
- How often is it updated?
- The publisher lists the update frequency as yearly. The last update was on 09/30/2026.
- How do I download it?
- It is available as CSV, JSON, XML. Use the links in Files and access, which open the official government source.
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Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/30/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Data.gov · Last updated 10/30/2026 · Listing only; the data stays with the publisher
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