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The efficacy of group cognitive-behavioural therapy plus duloxetine for generalised anxiety disorder versus duloxetine alone

Published online by Cambridge University Press:  03 September 2019

Zhi-Juan Xie
Affiliation:
Department of Psychiatry, Peking University People’s Hospital, Beijing, China
Nan Han
Affiliation:
Tenth Psychiatry Unit, Beijing Chang Ping Hospital of Integrated Chinese and Western Medicine, Beijing, China
Samuel Law
Affiliation:
Department of Psychiatry, University of Toronto, Toronto, ON, Canada
Zhi-Wen Li
Affiliation:
Institute of Reproductive and Child Health, Peking University, Beijing, China
Shu-Yan Chen
Affiliation:
Psychology Ward, Xiamen XianYue Hospital, Xiamen, People’s Republic of China
Ju-Ping Xiao
Affiliation:
Psychological Crisis Intervention Hotline and Psychological Counseling Department, Xiamen XianYue Hospital, Xiamen, China
Yi Zhang
Affiliation:
Psychological Crisis Intervention Hotline and Psychological Counseling Department, Xiamen XianYue Hospital, Xiamen, China
Bing-Ling Gao
Affiliation:
Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
Si-Si Jiang
Affiliation:
Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
Hui-Min Gao
Affiliation:
Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
Xue-Bing Huang*
Affiliation:
Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
*
Author for correspondence: Xue-Bing Huang, E-mail: huangxuebing@bjmu.edu.cn

Abstract

Objective:

To explore whether and how group cognitive-behavioural therapy (GCBT) plus medication differs from medication alone for the treatment of generalised anxiety disorder (GAD).

Methods:

Hundred and seventy patients were randomly assigned to the GCBT plus duloxetine (n=89) or duloxetine group (n=81). The primary outcomes were Hamilton Anxiety Scale (HAMA) response and remission rates. The explorative secondary measures included score reductions from baseline in the HAMA total, psychic, and somatic anxiety subscales (HAMA-PA, HAMA-SA), the Hamilton Depression Scale, the Severity Subscale of Clinical Global Impression Scale, Global Assessment of Functioning, and the 12-item Short-Form Health Survey. Assessments were conducted at baseline, 4-week, 8-week, and 3-month follow-up.

Results:

At 4 weeks, HAMA response (GCBT group 57.0% vs. control group 24.4%, p=0.000, Cohen’s d=0.90) and remission rates (GCBT group 21.5% vs. control group 6.2%, p=0.004; d=0.51), and most secondary outcomes (all p<0.05, d=0.36−0.77) showed that the combined therapy was superior. At 8 weeks, all the primary and secondary significant differences found at 4 weeks were maintained with smaller effect sizes (p<0.05, d=0.32−0.48). At 3-month follow-up, the combined therapy was only significantly superior in the HAMA total (p<0.045, d=0.43) and HAMA-PA score reductions (p<0.001, d=0.77). Logistic regression showed superiority of the combined therapy for HAMA response rates [odds ratio (OR)=2.12, 95% confidence interval (CI) 1.02−4.42, p=0.04] and remission rates (OR=2.80, 95% CI 1.27−6.16, p=0.01).

Conclusions:

Compared with duloxetine alone, GCBT plus duloxetine showed significant treatment response for GAD over a shorter period of time, particularly for psychic anxiety symptoms, which may suggest that GCBT was effective in changing cognitive style.

Type
Original Article
Copyright
© Scandinavian College of Neuropsychopharmacology 2019 

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