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Open Access 01-12-2022 | Panic Disorder | Research article

French adaptation and validation of the Panic Disorder Severity Scale—self-report

Authors: Pasquale Roberge, Patricia Marx, Jonathan Couture, Nathalie Carrier, Annie Benoît, Martin D. Provencher, Martin M. Antony, Peter J. Norton

Published in: BMC Psychiatry | Issue 1/2022

Abstract

Background

The aims of this study were to conduct a cross-cultural validation of the Panic Disorder Severity Scale – Self-Report (PDSS-SR) and to examine psychometric properties of the French-Canadian version.

Methods

A sample of 256 adults were included in the validation study based on data from the baseline interview of a clinical trial on transdiagnostic cognitive-behavioral therapy for mixed anxiety disorders. Participants completed the Anxiety and Related Disorders Interview Schedule (ADIS-5), and self-report instruments including the PDSS-SR, Beck Anxiety Inventory (BAI), Mobility Inventory for Agoraphobia (MIA), Sheehan Disability Scale (SDS), Patient Health Questionnaire (PHQ-9), Social Phobia Inventory (SPIN), Insomnia Severity Index (ISI) and Penn State Worry Questionnaire (PSWQ). The cross-cultural adaptation in French of the PDSS-SR included a rigorous back-translation process, with an expert committee review. Sensitivity to change was also examined with a subgroup of patients (n = 72) enrolled in the trial.

Results

The French version of the PDSS-SR demonstrated good psychometric properties. The exploratory factor analysis supported a one factor structure with an eigenvalue > 1 that explained 64.9% of the total variability. The confirmatory factor analysis (CFA) corroborated a one-factor model with a good model fit. Internal consistency analysis showed a .91 Cronbach’s alpha. The convergent validity was adequate with the ADIS-5 clinical severity ratings for panic disorder (r = .56) and agoraphobia (r = .39), as well as for self-report instruments [BAI (r = .63), MIA (accompanied: r = .50; alone: r = .47) and SDS (r = .37)]. With respect to discriminant validity, lower correlations were found with the SPIN (r = .17), PSWQ (r = .11), ISI (r = .19) and PHQ-9 (r = .28). The optimal threshold for probable diagnosis was 9 for the PDSS-SR and 4 for the very brief 2-item version. The French version showed good sensitivity to change.

Conclusions

The French version of the PDSS-SR has psychometric properties consistent with the original version and constitutes a valid brief scale to assess the severity of panic disorder and change in severity over time, both in research and clinical practice.

Available only for authorised users

The version of the PDSS-SR used by Wuyek et al. [5] included only five items because of a clerical error (personal communication, Martin M. Antony). The correct version of the PDSS-SR includes seven items.

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Title: French adaptation and validation of the Panic Disorder Severity Scale—self-report
Authors: Pasquale Roberge
Patricia Marx
Jonathan Couture
Nathalie Carrier
Annie Benoît
Martin D. Provencher
Martin M. Antony
Peter J. Norton
Publication date: 01-12-2022
Publisher: BioMed Central
Keywords: Panic Disorder
Anxiety or Fear-Related Disorders
Social Anxiety Disorder
Agoraphobia
Anxiety
Published in: BMC Psychiatry / Issue 1/2022
Electronic ISSN: 1471-244X
DOI: https://doi.org/10.1186/s12888-022-03989-x

Keynote webinar | Spotlight on medication adherence

Springer Medicine

French adaptation and validation of the Panic Disorder Severity Scale—self-report

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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