Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • PTSD Dichotomous Outcomes Between Arms

    Metadata Updated: October 2, 2025

    This dataset provides results for between-arm comparisons of continuous measures. Included is information on score differences, p-value for statistical test, and study-reported effect sizes.

    Where possible, the between-arm standardized effect size was calculated, using Hedges’ g. We calculated Hedges’ g based on the following (in order of preference): 1) adjusted mean difference; 2) follow-up scores; 3) unadjusted mean difference; 4) change scores. For the calculated effect size, information on the basis for calculation is included along with measures of variance. Negative values for Hedges’ g indicate a larger decrease (or lower follow-up score) in the first arm than in the second arm, while positive values indicate the reverse.

    Each comparison is on a separate row, and pairwise as well as omnibus (multi-arm) comparisons are included. There are also separate rows for each measure, time point and analysis type.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date September 28, 2023
    Metadata Updated Date October 2, 2025
    Data Update Frequency R/P1Y

    Metadata Source

    Harvested from VA JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 28, 2023
    Metadata Updated Date October 2, 2025
    Publisher National Center for PTSD
    Maintainer
    Identifier https://www.data.va.gov/api/views/tz36-rieh
    Data First Published 2023-07-07
    Language en-US
    Data Last Modified 2025-09-16
    Rights All data is within the public domain and is currently available for download.
    Category PTSD-Repository
    Public Access Level public
    Data Update Frequency R/P1Y
    Bureau Code 029:15
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://www.data.va.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Harvest Object Id 1dd3daae-36d3-466e-a1aa-70d38dbf6ad8
    Harvest Source Id fcd1f625-1c2e-4663-95cf-1b0eb053cce1
    Harvest Source Title VA JSON
    Homepage URL https://www.data.va.gov/d/tz36-rieh
    Program Code 029:000
    Source Datajson Identifier True
    Source Hash cee5c460b73683bd2fba1a7069fe8ee1c6ed2dd59ed18b5fb96fc06e5f4e0ac2
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.