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A psychometric investigation into two insomnia-specific measures of worry/rumination: the pre-sleep arousal scale and the anxiety and preoccupation about sleep questionnaire
Örebro University, School of Law, Psychology and Social Work. (Center for Health and Medical Psychology)ORCID iD: 0000-0003-2008-0784
Örebro University, School of Law, Psychology and Social Work.ORCID iD: 0000-0003-2059-1621
Örebro University, School of Law, Psychology and Social Work.ORCID iD: 0000-0001-5359-0452
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2010 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Introduction: The aim with this investigation was to psychometrically evaluate two insomnia-specific measures of worry/rumination: the Pre-Sleep Arousal Scale (PSAS; cognitive subscale) and the Anxiety and Preoccupation about Sleep Questionnaire (APSQ).

Methods: From a randomly selected sample from the general population (N = 5,000), 2,333 participants filled out a survey on sleep, daytime impairment, PSAS-C, and APSQ.

Results: Exploratory factor analyses showed that for both PSAS-C and APSQ only one factor was retained (total variance: 64% and 69%). One of the PSAS-C items fitted less well in the solution (‘being distracted by sounds, noise in the environment’). The internal consistency for PSAS-C was .92 and for APSQ .95, and the two measures were highly correlated (r: .67). Both measures were correlated with sleep onset latency (r: .43-.50), wake time after sleep onset during night (r: .44-.46) and morning (r: .31-.34), sleep quality (r: .55-.60), and with sleep restoration (r: .51-.54). The two measures were correlated with daytime symptoms and function (r: .27-.57). On both measures, significant mean differences were noted between three groups with differing insomnia symptomatology; insomnia disorder group reported significantly higher scores than insomnia symptoms and normal sleep groups, and insomnia symptoms group had significantly higher levels than normal sleep group.

Conclusions: In all, PSAS-C and APSQ are both psychometrically sound measures for assessing worry/rumination in insomnia.

Place, publisher, year, edition, pages
2010.
National Category
Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:oru:diva-12701OAI: oai:DiVA.org:oru-12701DiVA, id: diva2:376905
Conference
24th Annual Meeting of the APSS, San Antonio, USA, 5-9 June 2010
Available from: 2010-12-13 Created: 2010-12-13 Last updated: 2017-10-17Bibliographically approved

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Norell Clarke, AnnikaJansson-Fröjmark, MarkusLinton, Steven J.

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