Psychological Treatment of Overweight Binge Eaters

Binge Eating Disorder Clinical Trial

Official title:

A Randomized Comparison of Group-Behavioral Therapy and Group Interpersonal Psychotherapy for the Treatment of Overweight Individuals With Binge-Eating Disorder

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01208272
• Other study ID #: R29MH051384
• Status: Completed
• Phase: Phase 1/Phase 2
• First received: August 31, 2010
• Last updated: September 22, 2010
• Start date: April 1994
• Est. completion date: March 1999

Study information

• Verified date: September 2010
• Source: Washington University School of Medicine
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Federal Government
• Study type: Interventional

Clinical Trial Summary

Cognitive-behavioral therapy (CBT) has documented efficacy for the treatment of binge eating disorder (BED). Interpersonal psychotherapy (IPT) has been shown to reduce binge eating but its long-term impact and time course on other BED-related symptoms remain largely unknown. This study compares the effects of group CBT and group IPT across BED-related symptoms among overweight individuals with BED.

Description:

Cognitive-behavioral therapy (CBT) has documented efficacy for the treatment of binge eating disorder (BED). Interpersonal psychotherapy (IPT) has been shown to reduce binge eating but its long-term impact and time course on other BED-related symptoms remain largely unknown. This study compares the effects of group CBT and group IPT across BED-related symptoms among overweight individuals with BED. METHODS: One hundred sixty-two overweight patients meeting DSM-IV criteria for BED were randomly assigned to 20 weekly sessions of either group CBT or group IPT. Assessments of binge eating and associated eating disorder psychopathology, general psychological functioning, and weight occurred before treatment, at posttreatment, and at 4-month intervals up to 12 months following treatment. RESULTS: Binge-eating recovery rates were equivalent for CBT and IPT at posttreatment (64 [79%] of 81 vs 59 [73%] of 81) and at 1-year follow-up (48 [59%] of 81 vs 50 [62%] of 81). Binge eating increased slightly through follow-up but remained significantly below pretreatment levels. Across treatments, patients had similar significant reductions in associated eating disorders and psychiatric symptoms and maintenance of gains through follow-up. Dietary restraint decreased more quickly in CBT but IPT had equivalent levels by later follow-ups. Patients' relative weight decreased significantly but only slightly, with the greatest reduction among patients sustaining recovery from binge eating from posttreatment to 1-year follow-up. CONCLUSIONS: Group IPT is a viable alternative to group CBT for the treatment of overweight patients with BED. Although lacking a nonspecific control condition limits conclusions about treatment specificity, both treatments showed initial and long-term efficacy for the core and related symptoms of BED.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 162
• Est. completion date: March 1999
• Est. primary completion date: March 1998
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 18 Years to 65 Years

Eligibility

Inclusion Criteria:

• DSM-IV research criteria for binge-eating disorder

• Average of greater than or equal to 2 days of binge eating per week for at least 6 months' duration

• Marked stress regarding binge eating

• At least 3 to 5 associated behavioral features (e.g. eating when not physically hungry) Other study criteria

• 18-65 years old

• Body mass index, 27-48 kg/m squared

Exclusion Criteria:

• Pregnant or planning to become pregnant

• Taking weight-affecting or psychotropic medications

• Psychiatric conditions warranting immediate treatment

• Current enrollment in psychotherapy or a weight loss program

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Binge Eating Disorder
• Binge-Eating Disorder
• Bulimia
• Bulimia Nervosa
• Cognitive Therapy/Methods
• Disease
• Eating Disorders
• Mental Disorders
• Mental Disorders/Epidemiology
• Obesity
• Obesity/Epidemiology
• Obesity/Therapy
• Psychotic Disorders

Intervention

Behavioral:
• Cognitive Behavioral Therapy (CBT)

• Interpersonal Therapy (IPT)

Locations

Country	Name	City	State
United States	Yale University	New Haaven	Connecticut
United States	Yale University	New Haven	Connecticut

Sponsors (1)

Lead Sponsor	Collaborator
Washington University School of Medicine

Country where clinical trial is conducted

United States, 

References & Publications (1)

Wilfley DE, Welch RR, Stein RI, Spurrell EB, Cohen LR, Saelens BE, Dounchis JZ, Frank MA, Wiseman CV, Matt GE. A randomized comparison of group cognitive-behavioral therapy and group interpersonal psychotherapy for the treatment of overweight individuals — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To investigate the short and long-term efficacy of two treatments for binge eating among the overweight: Group Cognitive-Behavior (CBT) and Group Interpersonal Therapy (IPT).	Assessments of binge eating and associated eating disorder paychopathology, general psychological functioning, and weight occurred before treatment, at post treatment, and at 4-month intervals up to 12 months following treatment.