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Psychometric properties of the Insomnia Catastrophizing Scale (ICS) in a large community sample
Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden.
Department of Psychology, University of California, Berkeley, CA, USA.
Örebro University, School of Law, Psychology and Social Work. (Center for Health and Medical Psychology (CHAMP))ORCID iD: 0000-0003-2718-7402
2019 (English)In: Cognitive Behaviour Therapy, ISSN 1650-6073, E-ISSN 1651-2316Article in journal (Refereed) Epub ahead of print
Abstract [en]

The purpose was to investigate the psychometric properties of the Insomnia Catastrophizing Scale (ICS) including factorial validity and internal consistency as well as discriminative and convergent validity. Associations with sleep parameters and daytime impairment are also examined. Drawn from a randomly selected sample of the general population, 1615 participants completed a survey on insomnia-related nighttime and daytime symptoms, health outcomes and psychological processes, including the ICS. A one-factor solution was supported for both the nighttime catastrophizing (11 items) and daytime catastrophizing (6 items) subscales. Both subscales displayed high internal consistencies (α > 0.90) and accounted for 59.1-70.1% of the variance. The insomnia disorder group had significantly higher scores than participants without insomnia on the two subscales and on the individual items. Cutoffs were established for both subscales with acceptable sensitivity and specificity. Both subscales displayed adequate convergent validity with measures indexing worry, cognitive pre-sleep arousal and anxiety. The two subscales were also significantly associated with nighttime and daytime insomnia symptoms. The ICS is a reliable and valid scale for the assessment of insomnia-related catastrophizing. Future research is needed to examine the test-retest reliability and treatment sensitivity of the ICS.

Place, publisher, year, edition, pages
Routledge, 2019.
Keywords [en]
Insomnia, catastrophizing, scale, sleep
National Category
Psychology
Identifiers
URN: urn:nbn:se:oru:diva-73276DOI: 10.1080/16506073.2019.1588362PubMedID: 30896297OAI: oai:DiVA.org:oru-73276DiVA, id: diva2:1298307
Available from: 2019-03-22 Created: 2019-03-22 Last updated: 2019-03-22Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
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