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Development of a very brief scale for detecting and measuring panic disorder using two items from the Panic Disorder Severity Scale-Self Report
Karolinska Institutet, Sweden;Stockholm County Council, Sweden.
Karolinska Institutet, Sweden;Stockholm County Council, Sweden.
Karolinska Institutet, Sweden;Stockholm County Council, Sweden.
Karolinska Institutet, Sweden;Stockholm County Council, Sweden.
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2019 (Engelska)Ingår i: Journal of Affective Disorders, ISSN 0165-0327, E-ISSN 1573-2517, Vol. 257, s. 615-622Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Objective: To minimize the burden in detecting and monitoring Panic Disorder and Agoraphobia by developing a very brief scale with selected items from the Panic Disorder Severity Scale-Self Report (PDSS-SR), and to investigate the proposed scale's psychometric properties in a comorbid sample. Methods: A sample of 5103 patients from the Internet Psychiatry Clinic in Sweden, diagnosed and treated with Internet-based cognitive behavioral therapy for panic disorder (n = 1390), social anxiety disorder (n = 1313) or depression (n = 2400), responded to the PDSS-SR. Six criteria related to factor structure, sensitivity to change and clinical representativeness were used to select items. Psychometric analyses for the selected very brief scale were performed. Results: Items 2 (distress during panic attacks) and 4 (agoraphobic avoidance), were selected to create the very brief PDSS-SR version. Correlations with the full scale were high at screening, pre and post, and for change (0.87-0.93). Categorical Omega was omega(c) = 0.74. With a cut-off of 3 points, the scale could detect panic disorder in a psychiatric sample with a sensitivity of 85% and a specificity of 66%. Limitations: Limitations include lack of healthy controls and lack of blinding on secondary outcome measures. Conclusion: The proposed 2-item PDSS-SR version is a good candidate for a very brief panic disorder questionnaire, both for detecting cases and for measuring change. This is especially useful in clinical settings when measuring more than one condition at a time.

Ort, förlag, år, upplaga, sidor
Elsevier, 2019. Vol. 257, s. 615-622
Nyckelord [en]
Psychometrics, Factor analysis, Statistical, Panic disorder, Diagnostics, Psychiatry
Nationell ämneskategori
Psykologi
Forskningsämne
Samhällsvetenskap, Psykologi
Identifikatorer
URN: urn:nbn:se:lnu:diva-89255DOI: 10.1016/j.jad.2019.07.057ISI: 000482376300077PubMedID: 31349178OAI: oai:DiVA.org:lnu-89255DiVA, id: diva2:1354178
Tillgänglig från: 2019-09-24 Skapad: 2019-09-24 Senast uppdaterad: 2019-09-24Bibliografiskt granskad

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Kaldo, Viktor

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Jernelov, SusannaKaldo, Viktor
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Institutionen för psykologi (PSY)
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