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Clin Psychol Rev. 2011 Jun;31(4):638-52. doi: 10.1016/j.cpr.2011.02.004. Epub 2011 Feb 17.

Meta-analytic review of the impact of cognitive-behavior therapy for insomnia on concomitant anxiety.

Author information

1
École de Psychologie, Université Laval, Pavillon Félix-Antoine-Savard, Québec, Canada . genevieve.belleville@psy.ulaval.ca

Abstract

INTRODUCTION:

Concomitant anxiety and insomnia is a frequent problem encountered by mental health professionals.

PRIMARY OBJECTIVE:

To assess the impact of cognitive-behavior therapy for insomnia (CBT-I) on associated anxiety.

METHOD:

Systematic search for clinical trials of CBT-I in PsycInfo, Medline, and Proquest Dissertations and Theses.

RESULTS:

Of the 216 CBT-I trials reviewed, 72 (33.3%) reported data on anxiety. The combined effect size (ES) of CBT-I on anxiety was 0.406 [95% CI 0.318-0.493], indicating a small to moderate effect of CBT-I on concomitant anxiety. Anxiety and anxiety-related constructs were measured with 31 different questionnaires or questionnaire subscales, the majority of which were used only once in the sample of studies.

CONCLUSIONS:

CBT-I has only a moderate impact on anxiety in individuals who present insomnia with or without a comorbid anxiety disorder. A careful evaluation of residual anxiety should be conducted subsequent to CBT-I. Further research should focus on standardizing the assessment of anxiety in insomnia research.

PMID:
21482322
DOI:
10.1016/j.cpr.2011.02.004
[Indexed for MEDLINE]

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