Psychometric properties of the Overall Anxiety Severity and Impairment Scale (OASIS) among psychiatric outpatients

Bragdon, Laura B.; Diefenbach, Gretchen J.; Hannan, Scott; Tolin, David F.

doi:10.1016/j.jad.2016.05.005

Cited by 46Anxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesPsychometric Methodologies and TestingMental Health Research Topics

Psychometric properties of the Overall Anxiety Severity and Impairment Scale (OASIS) among psychiatric outpatients

Bragdon, Laura B., Diefenbach, Gretchen J., Hannan, Scott, Tolin, David F.·2016·Journal of Affective Disorders

DOI 10.1016/j.jad.2016.05.005

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Abstract

Background The Overall Anxiety Severity and Impairment Scale (OASIS) is a brief, transdiagnostic measure used to assess anxiety severity and related interference. The OASIS has demonstrated strong psychometric properties in previous investigations, however, it has yet to be validated using a transdiagnostic clinician-rated measure.Methods We evaluated the factor structure, convergent and discriminant validity, and illness severity cut-scores of the OASIS in a sample of outpatients (N=202).Results A confirmatory factor analysis indicated an unidimensional structure provided the best fit. The OASIS demonstrated good convergent validity and internal consistency. Using the Clinical Global Impression-Severity Scale (CGI-S), ROC curves showed OASIS scores of 6, 10 and 12 to indicate moderate, marked and severe illness severity, respectively.Conclusions The OASIS is a unidimensional self-report measure with good convergent validity and data from the current study provide illness severity cut-scores.

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The Overall Anxiety Severity and Impairment Scale has been shown to have strong psychometric properties in previous studies.
“The OASIS has been shown to have strong psychometric properties in previous studies [6, 39]”
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Authors: Bragdon, L. B., Diefenbach, G. J., Hannan, S., & Tolin, D. F.
Affiliations: Binghamton University (US)
Hartford Hospital (US)
Corresponding author: Bragdon, Laura B.
ORCID: Bragdon, Laura B.
Diefenbach, Gretchen J.
Tolin, David F.
Venue: Journal of Affective Disorders
Publisher: Elsevier BV
Published: 2016-09
Volume: 201
Pages: 112-115
ISSN: 0165-0327 (ISSN-L)
DOI: 10.1016/j.jad.2016.05.005
OpenAlex: W2346879953
Cited by: 46
References: 18
Citations by year: 2026: 4 · 2025: 7 · 2024: 6 · 2023: 6 · 2022: 5 · 2021: 6 · 2020: 4 · 2019: 3 · 2018: 3 · 2017: 2
FWCI: 3.79
Type: journal article
Language: en
Open access: closed
Licence: www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations: Journal of Affective Disorders (publishedVersion)
PubMed (publishedVersion)
Topics: Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
Keywords: anxiety levels, transdiagnostic assessment, psychiatric outpatients, factor structure, convergent validity, discriminant validity, Clinical Global Impression Scale, self-report measures
MeSH terms: Adult, Anxiety, Anxiety Disorders, Factor Analysis, Statistical, Female, Humans, Male, Outpatients, Psychiatric Status Rating Scales, Psychometrics, ROC Curve, Severity of Illness Index, Reproducibility of Results, Self Report

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Psychometric properties of the Overall Anxiety Severity and Impairment Scale (OASIS) among psychiatric outpatients

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