The objective of this study was to evaluate the impact of integrating insomnia management strategies into CBT for GAD on insomnia and anxiety. Forty-nine participants with GAD (84% females; mean age=32.0) were randomized to 12-weeks of CBT for GAD that included or excluded insomnia management strategies. Participants completed the Anxiety Disorders Interview Schedule for DSM-IV (ADIS-IV) before and after treatment, as well as the Insomnia Severity Index (ISI) and the Worry and Anxiety Questionnaire (WAQ) before and after treatment and at 3- and 6-month follow-ups. There was no condition effect and no condition×time interaction effect on the primary outcomes (ISI and WAQ). Both conditions produced large decreases in insomnia, F(3, 46.03)=25.75, P<0.001, pre- to post-treatment g=1.03, 95% CI [0.69–1.37] and anxiety, F(3, 45.93)=37.32, P<0.001, from pre- to post-treatment g=1.23, 95% CI [0.86–1.59]. The proportion of participants with baseline insomnia disorder who no longer had this condition post-treatment was larger in CBT GAD+Insomnia (89%) than in CBT GAD (59%), X2(1)=4.23,=0.040. CBT for GAD alone may improve insomnia symptoms, and the integrated treatment did not show additional benefits on the insomnia severity outcome. However, the addition of insomnia management strategies may be of greatest benefit for individuals with insomnia disorder.Le texte complet de cet article est disponible en PDF.
Keywords : Generalized anxiety disorder, Insomnia, Comorbidity, Cognitive-behavior therapy
|☆|| Results from a portion of the sample have been used in the following Ph.D. dissertation: Boily, Leslie-Ann (2019). Régulation émotionnelle et satisfaction conjugale dans la conceptualisation et le traitement du trouble d’anxiété généralisée. Université Laval, Québec, Canada, and have been published: Boily, L.-A., & Belleville, G. (2018). L’union des modèles de l’intolérance à l’incertitude et de la régulation émotionnelle renforce-t-elle le traitement cognitif-comportemental du trouble d’anxiété généralisée ? Journal de Thérapie Comportementale et Cognitive, 28(4):185–195. DOI:10.1016/j.jtcc.2018.06.001.
|☆☆|| Preliminary versions of the results included in this paper have been presented at the following scientific meetings: 35th annual meeting of the Société québécoise pour la recherche en psychologie (SQRP), Saguenay, Canada (2013), 3rd meeting of the Canadian Association for Cognitive and Behavioural Therapies, Montréal, Canada (2013), and 51st Annual Convention of the Association for Behavioral and Cognitive Therapies, San Diego, CA, United States (2017).