Binge Eating Disorder Treatment Study

Study Overview
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Brief Summary
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The main objective of the proposed study is to determine whether the effectiveness of a group therapy treatment for Binge Eating Disorder (BED) is improved and attrition reduced by optimally matching women with BED who have high attachment anxiety to Group Psychodynamic Interpersonal Psychotherapy (GPIP). This study represents the next phase in a program of research stemming from a previously conducted randomized controlled trial (RCT).

Official Title
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Optimizing Outcomes for Binge Eating, Depression and Weight Loss for Obese Women With Binge Eating Disorder by Matching to Group Psychological Treatments Based on Level of Attachment Anxiety

Conditions
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Binge Eating Disorder

Intervention / Treatment
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* Behavioral: Group Psychodynamic Interpersonal Psychotherapy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: •Overweight Women 18 years of age or older who binge eat at least twice per week for the past month. Exclusion Criteria: unable speak English history of an eating disorder other than Binge Eating Disorder concurrent Diagnostic and Statistical Manual-IV (DSM-IV) diagnosis of bipolar disorder, psychosis, drug or alcohol problem pregnant or planning on becoming pregnant within the next year are currently or plan to become enrolled in a weight loss program within the next year

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: High attachment anxiety condition<br>16 weeks of Group Psychodynamic Interpersonal Psychotherapy for patients with Binge Eating Disorder, matching them by attachment anxiety dimensions in order to enhance the impact of the therapy. It is hypothesized that by optimally matching patients to groups, they will have better clinical and health outcomes. | Behavioral: Group Psychodynamic Interpersonal Psychotherapy<br>* This intervention will consist of 16 weekly 90 minute sessions of Group Psychodynamic Interpersonal Psychotherapy (GPIP). GPIP was developed and empirically tested in a randomized controlled trial (RCT) at our Centre. GPIP will be preceded by an individual pre-group preparation session conducted by a psychologist trained in GPIP to orient the patient to the therapy. Patients are given a rationale for the treatment.<br>|
| Experimental: Low attachment anxiety condition<br>16 weeks of Group Psychodynamic Interpersonal Psychotherapy for patients with Binge Eating Disorder, matching them by attachment anxiety dimensions in order to enhance the impact of the therapy. It is hypothesized that by optimally matching patients to groups, they will have better clinical and health outcomes. | Behavioral: Group Psychodynamic Interpersonal Psychotherapy<br>* This intervention will consist of 16 weekly 90 minute sessions of Group Psychodynamic Interpersonal Psychotherapy (GPIP). GPIP was developed and empirically tested in a randomized controlled trial (RCT) at our Centre. GPIP will be preceded by an individual pre-group preparation session conducted by a psychologist trained in GPIP to orient the patient to the therapy. Patients are given a rationale for the treatment.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Frequency of Binge Eating in the Past 28 Days |  | Pre and Post treatment, 6 months and 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Depression Symptoms | Early response to treatment is indicated by a reduction in depression symptoms measured by The Beck Depression Inventory II (BDI-II; Beck, Steer, & Brown, 1996). The BDI-II is scored by summing the ratings for the 21 items. Each item is rated on a 4-point scale ranging from 0 to 3. The range for this scale is 0-63. Higher scores represent more depressive symptoms. We included cases that were missing up to 8 missing items and calculated scores for participants with missing items by taking the weighted mean and multiplying by 21. | Pre and Post treatment, 6 months and 1 year |