Efficacy of a Cognitive Behavioural group Therapy (CBT) for compulsive buying disorder
ISRCTN | ISRCTN38444899 |
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DOI | https://doi.org/10.1186/ISRCTN38444899 |
Secondary identifying numbers | N/A |
- Submission date
- 11/09/2007
- Registration date
- 22/11/2007
- Last edited
- 22/11/2007
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Plain English summary of protocol
Not provided at time of registration
Contact information
Dr Astrid Mueller
Scientific
Scientific
Department of Psychosomatic Medicine and Psychotherapy
University Hospital of Erlangen
Schwabachanlage 6
Erlangen
D-91054
Germany
Phone | +49 (0)9131 85 34890 |
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astrid.mueller@uk-erlangen.de |
Study information
Study design | Randomised, controlled, efficacy study comparing CBT with waiting list control. |
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Primary study design | Interventional |
Secondary study design | Randomised controlled trial |
Study setting(s) | Hospital |
Study type | Treatment |
Scientific title | |
Study objectives | Disorder specific group Cognitive Behavioural Therapy (CBT) can improve the compulsive buying behaviour. |
Ethics approval(s) | Ethics approval received from the Institutional Ethics Committee of the University Hospital of Erlangen (Germany) on the 27th August 2003 (ref: 3008). |
Health condition(s) or problem(s) studied | Compulsive buying disorder |
Intervention | This trial is a randomised controlled trial comparing a treatment group with a waiting list control group (2 arms). Because of logistical difficulties a simultaneous conduction of groups was not feasible in this monocentric study. Patients were assigned to groups upon enrolment, which were subsequently randomised to one of two conditions. Thirty-one participants were assigned to one of five CBT groups, and 29 individuals to one of five Waiting List Control (WLC) groups. Participants were blind to the randomisation. Intervention: 12-weekly outpatient disorder specific group CBT-sessions specifically aiming at interrupting and controlling the problematic buying behaviour, establishing healthy purchasing patterns, restructuring maladaptive thoughts and negative feelings associated with shopping and buying, and developing healthy coping skills. Control: Waiting list control. Treatment lasted 12 weeks with one 90-minutes session per week. Groups were conducted with 5 - 8 participants. Follow-up was for 6 months after finishing the treatment for all participants. |
Intervention type | Other |
Primary outcome measure | 1. Compulsive Buying Scale (CBS) 2. Yale-Brown Obsessive Compulsive Scale - Shopping Version (Y-BOCS-SV) 3. German Compulsive Buying Scale (G-CBS) All participants were assessed at baseline. Participants assigned to CBT were assessed at the end of treatment and at the end of a 6-months follow-up period. Individuals assigned to the WLC were reassessed 12 weeks after the baseline assessment. All assessments were conducted by research staff members who remained blind to the treatment assignment throughout the study. Participants completed all self-report questionnaires during the assessment visits. |
Secondary outcome measures | 1. Symptom Check-List-90-R (SCL-90-R) 2. Barratt Impulsiveness Scale (BIS-11) 3. Saving Inventory - Revised (SI-R) All participants were assessed at baseline. Participants assigned to CBT were assessed at the end of treatment and at the end of a 6-months follow-up period. Individuals assigned to the WLC were reassessed 12 weeks after the baseline assessment. All assessments were conducted by research staff members who remained blind to the treatment assignment throughout the study. Participants completed all self-report questionnaires during the assessment visits. |
Overall study start date | 01/11/2003 |
Completion date | 30/05/2007 |
Eligibility
Participant type(s) | Patient |
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Age group | Adult |
Lower age limit | 18 Years |
Sex | Both |
Target number of participants | 60 |
Key inclusion criteria | 1. Current compulsive buying problems according to the criteria of McElroy et. al. (1994) 2. Aged 18 and over |
Key exclusion criteria | 1. Active suicidal ideation 2. Current mania |
Date of first enrolment | 01/11/2003 |
Date of final enrolment | 30/05/2007 |
Locations
Countries of recruitment
- Germany
Study participating centre
Department of Psychosomatic Medicine and Psychotherapy
Erlangen
D-91054
Germany
D-91054
Germany
Sponsor information
University Hospital of Erlangen (Germany)
Hospital/treatment centre
Hospital/treatment centre
Erlanger Leistungsbezogene Anschubfinanzierung und Nachwuchsforderung (ELAN) fund
Universitatsstrasse 40
Erlangen
D-91054
Germany
Phone | +49 (0)9131 85 23708 |
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annette.pfeiffer@zuv.uni-erlangen.de | |
Website | http://www.elan.uk-erlangen.de/e404/index_ger.html |
https://ror.org/0030f2a11 |
Funders
Funder type
Hospital/treatment centre
University Hospital of Erlangen (Germany) - Erlanger Leistungsbezogene Anschubfinanzierung und Nachwuchsforderung (ELAN) fund
No information available
Bavarian Savings Bank Foundation (Germany)
No information available
Results and Publications
Intention to publish date | |
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Individual participant data (IPD) Intention to share | No |
IPD sharing plan summary | Not provided at time of registration |
Publication and dissemination plan | Not provided at time of registration |
IPD sharing plan |
Study outputs
Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
---|---|---|---|---|---|
Results article | Results | 01/11/2007 | Yes | No |