Evidence map›Paper›PMID 19426512›Full record

ArticleBMC psychiatry2009

Rasch model analysis of the Depression, Anxiety and Stress Scales (DASS).

Tracey L Shea, Alan Tennant, Julie F Pallant

Abstract readComparative Study
In one paragraph

Article in BMC psychiatry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

63 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Systematic review of the measurement properties of the Depression Anxiety Stress Scales-21 by applying updated COSMIN methodology.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2019
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  7. The adult social care outcomes toolkit easy read for older people (ASCOT-ER OP): an exploratory factor analysis and Rasch validation study.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026
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  10. Clarifications and perspectives on mental health assessment during the COVID-19 pandemic.Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999) · 2025
    Article
  11. Exploratory factor analysis and Rasch analysis to assess the structural validity of the Adult Social Care Outcomes Toolkit Proxy version (ASCOT-Proxy) completed by care home staff.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2024
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  17. An Exploration of the Influence of Non-Biomechanical Factors on Lifting-Related LBP.International journal of environmental research and public health · 2023
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  18. The YSQ-R: Predictive Validity and Comparison to the Short and Long Form Young Schema Questionnaire.International journal of environmental research and public health · 2023
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3 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Tracey L SheaSwinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia. tracey.shea@buseco.monash.edu.au
Alan Tennant
Julie F Pallant

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is a growing awareness of the need for easily administered, psychometrically sound screening tools to identify individuals with elevated levels of psychological distress. Although support has been found for the psychometric properties of the Depression, Anxiety and Stress Scales (DASS) using classical test theory approaches it has not been subjected to Rasch analysis. The aim of this study was to use Rasch analysis to assess the psychometric properties of the DASS-21 scales, using two different administration modes.

methodsThe DASS-21 was administered to 420 participants with half the sample responding to a web-based version and the other half completing a traditional pencil-and-paper version. Conformity of DASS-21 scales to a Rasch partial credit model was assessed using the RUMM2020 software.

resultsTo achieve adequate model fit it was necessary to remove one item from each of the DASS-21 subscales. The reduced scales showed adequate internal consistency reliability, unidimensionality and freedom from differential item functioning for sex, age and mode of administration. Analysis of all DASS-21 items combined did not support its use as a measure of general psychological distress. A scale combining the anxiety and stress items showed satisfactory fit to the Rasch model after removal of three items.

conclusionThe results provide support for the measurement properties, internal consistency reliability, and unidimensionality of three slightly modified DASS-21 scales, across two different administration methods. The further use of Rasch analysis on the DASS-21 in larger and broader samples is recommended to confirm the findings of the current study.

Indexed as

Models, StatisticalAdultAge FactorsAnxiety DisordersDepressive DisorderEducational StatusFactor Analysis, StatisticalFemaleHumansInternetMalePsychiatric Status Rating ScalesPsychometricsReproducibility of ResultsSex FactorsStress, Psychological

Identifiers

PMID19426512
PMCPMC2689214

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.