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Psychometric Properties and the Predictive Validity of the Insomnia Daytime Worry Scale: A Pilot Study.

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Title: Psychometric Properties and the Predictive Validity of the Insomnia Daytime Worry Scale: A Pilot Study.
Authors: Kallestad, Håvard (AUTHOR), Hansen, Bjarne (AUTHOR), Langsrud, Knut (AUTHOR), Hjemdal, Odin (AUTHOR), Stiles, Tore C. (AUTHOR)
Source: Cognitive Behaviour Therapy. 2010, Vol. 39 Issue 2, p150-157. 8p. 5 Charts.
Subjects: Insomnia, Worry, Sleep disorders, Sleep deprivation, Factor analysis, Regression analysis
Abstract: The relationship between presleep worry and insomnia has been investigated in previous studies, but less attention has been given to the role of daytime worry and symptoms of insomnia. The aims of the current study were (a) to assess the psychometric properties of a novel scale measuring insomnia-specific worry during daytime and (b) to examine whether levels of daytime worry predict severity of insomnia symptoms. Participants (N = 353) completed the Insomnia Daytime Worry Scale (IDWS) and the Insomnia Severity Index. An explorative principal-axis factor analysis extracted two factors from the IDWS, accounting for 70.5% of the variance. The IDWS demonstrated good reliability. The total score of IDWS and both factors predicted levels of insomnia severity in two separate hierarchical regression analyses. This preliminary evidence suggests that the IDWS is a valid and reliable scale to measure daytime worry in insomnia. [ABSTRACT FROM AUTHOR]
Copyright of Cognitive Behaviour Therapy is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Psychometric Properties and the Predictive Validity of the Insomnia Daytime Worry Scale: A Pilot Study.
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  Data: <searchLink fieldCode="AR" term="%22Kallestad%2C+Håvard%22">Kallestad, Håvard</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hansen%2C+Bjarne%22">Hansen, Bjarne</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Langsrud%2C+Knut%22">Langsrud, Knut</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hjemdal%2C+Odin%22">Hjemdal, Odin</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Stiles%2C+Tore+C%2E%22">Stiles, Tore C.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Cognitive+Behaviour+Therapy%22">Cognitive Behaviour Therapy</searchLink>. 2010, Vol. 39 Issue 2, p150-157. 8p. 5 Charts.
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  Data: <searchLink fieldCode="DE" term="%22Insomnia%22">Insomnia</searchLink><br /><searchLink fieldCode="DE" term="%22Worry%22">Worry</searchLink><br /><searchLink fieldCode="DE" term="%22Sleep+disorders%22">Sleep disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Sleep+deprivation%22">Sleep deprivation</searchLink><br /><searchLink fieldCode="DE" term="%22Factor+analysis%22">Factor analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Regression+analysis%22">Regression analysis</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The relationship between presleep worry and insomnia has been investigated in previous studies, but less attention has been given to the role of daytime worry and symptoms of insomnia. The aims of the current study were (a) to assess the psychometric properties of a novel scale measuring insomnia-specific worry during daytime and (b) to examine whether levels of daytime worry predict severity of insomnia symptoms. Participants (N = 353) completed the Insomnia Daytime Worry Scale (IDWS) and the Insomnia Severity Index. An explorative principal-axis factor analysis extracted two factors from the IDWS, accounting for 70.5% of the variance. The IDWS demonstrated good reliability. The total score of IDWS and both factors predicted levels of insomnia severity in two separate hierarchical regression analyses. This preliminary evidence suggests that the IDWS is a valid and reliable scale to measure daytime worry in insomnia. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Cognitive Behaviour Therapy is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Code: eng
        Text: English
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        PageCount: 8
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      – SubjectFull: Insomnia
        Type: general
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      – SubjectFull: Sleep disorders
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      – SubjectFull: Regression analysis
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              Text: 2010
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