Evaluation of a Web-Based Intervention for Bulimia Nervosa
NCT ID: NCT04876196
Last Updated: 2025-03-17
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
152 participants
INTERVENTIONAL
2021-01-12
2022-07-07
Brief Summary
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After a sign-up process, a diagnostic interview, and a baseline assessment, eligible participants will be randomly allocated either to (1) an intervention group including the online web-based intervention for BN or (2) a waitlist control group with delayed access to the intervention (12 weeks). The program comprises six mandatory weekly sessions and six modular specialization areas resulting in a treatment period of 12 weeks. Minimal guidance is provided via a chat function.
Assessments will be conducted at pretreatment (study entrance), six weeks after baseline (mid-treatment), and 12 weeks after baseline (post-treatment).
The investigators expect that the intervention group will show lower frequencies of binge eating episodes and compensatory behavior as the primary outcome variables after the 12 weeks of treatment compared to a waitlist control condition. Moreoever, the investigators assume that there will be a higher reduction in global eating disorder symptoms, comorbid psychopathology, and a higher increase in well-being and self-esteem over 12 weeks in the intervention group compared to the waitlist control group.
Finally, the investigators expect that the intervention group will demonstrate a significantly higher reduction in functional impairment, substantially better restoration of work capacity, and an improved ability to regulate emotions after the 12 weeks of treatment.
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Detailed Description
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Goal: This study evaluates the effectiveness of a web-based intervention specifically designed for patients with BN in a blinded randomized controlled trial.
Method: After a sign-up process, a structured diagnostic interview, and a baseline assessment, eligible participants will be randomly allocated either to (1) an intervention group including the online web-based intervention for BN or (2) a waitlist control group with delayed access to the intervention (12 weeks). The program comprises six mandatory weekly sessions covering topics related to eating behaviors, emotion regulation, and stress management, followed by an optional set of up to six modular specialization areas based on individual therapy goals. Moreover, minimal guidance is included, consisting of technical support and answering questions via a chat function. Assessments will be conducted at pretreatment (study entrance), six weeks after baseline (mid-treatment), and 12 weeks after baseline (post-treatment). The primary outcome will be the number of binge eating episodes and compensatory behaviors. Secondary measures include global eating pathology, comorbid psychopathology, quality of life, self-esteem, emotion regulation, work capacity, and functional impairments.
Statistical Analyses: An intention-to-treat analysis will be performed to examine differences between the intervention and the control group in the change of eating disorder symptoms and secondary outcomes from pre- to post-treatment.
Hypotheses: The investigators expect that the intervention group will show lower frequencies of binge eating episodes and compensatory behavior as the primary outcome variables after the 12 weeks of treatment compared to a waitlist control condition. The investigators assume that there will be a higher reduction in global eating disorder symptoms, comorbid psychopathology, and a higher increase in well-being and self-esteem over 12 weeks in the intervention group compared to the waitlist control group. Moreover, the investigators expect that the intervention group will demonstrate a significantly higher reduction in functional impairment, substantially better restoration of work capacity, and an improved ability to regulate negative emotions after the 12 weeks of treatment.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
TRIPLE
Study Groups
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Intervention Group
Web-based intervention (Selfapy for Bulimia Nervosa)
Selfapy for Bulimia Nervosa
Web-based intervention for Bulimia Nervosa with six mandatory weekly sessions covering topics related to eating behaviors, emotion regulation, and stress management, followed by an optional set of up to six modular specialization areas based on individual therapy goals. During the intervention, participants can access an online chat providing crisis management, answering questions concerning the exercises, and technical support. The chat does not include the opportunity to discuss individual topics and concerns about treatment.
Waitlist Control Group
12-week waiting period
No interventions assigned to this group
Interventions
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Selfapy for Bulimia Nervosa
Web-based intervention for Bulimia Nervosa with six mandatory weekly sessions covering topics related to eating behaviors, emotion regulation, and stress management, followed by an optional set of up to six modular specialization areas based on individual therapy goals. During the intervention, participants can access an online chat providing crisis management, answering questions concerning the exercises, and technical support. The chat does not include the opportunity to discuss individual topics and concerns about treatment.
Eligibility Criteria
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Inclusion Criteria
* permanent internet access during the study period
* meeting the diagnostic criteria for Bulimia Nervosa according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5)
Exclusion Criteria
* acute suicidality
* comorbid bipolar disorder or psychotic disorders
* acute substance dependence
* current psychotherapy or pharmacotherapy for eating disorders
* Body Mass Index (BMI) below 18.5
18 Years
65 Years
ALL
No
Sponsors
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Selfapy GmbH
UNKNOWN
Heidelberg University
OTHER
Responsible Party
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Christina Timm
Principal Investigator
Principal Investigators
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Luise Pruessner
Role: PRINCIPAL_INVESTIGATOR
Department of Psychology, Heidelberg University
Christina Timm, PhD
Role: PRINCIPAL_INVESTIGATOR
Department of Psychology, Heidelberg University
Steffen Hartmann
Role: PRINCIPAL_INVESTIGATOR
Department of Psychology, Heidelberg University
Sven Barnow, Prof.
Role: PRINCIPAL_INVESTIGATOR
Department of Psychology, Heidelberg University
Locations
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Heidelberg University
Heidelberg, Baden-Wurttemberg, Germany
Countries
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References
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Chisholm D, Knapp MR, Knudsen HC, Amaddeo F, Gaite L, van Wijngaarden B. Client Socio-Demographic and Service Receipt Inventory--European Version: development of an instrument for international research. EPSILON Study 5. European Psychiatric Services: Inputs Linked to Outcome Domains and Needs. Br J Psychiatry Suppl. 2000;(39):s28-33. doi: 10.1192/bjp.177.39.s28.
Gratz, K. L., & Roemer, L. (2004). Multidimensional assessment of emotion regulation and dysregulation: Development, factor structure, and initial validation of the difficulties in emotion regulation scale. Journal of psychopathology and behavioral assessment, 26(1), 41-54.
Izadpanah S, Barnow S, Neubauer AB, Holl J. Development and Validation of the Heidelberg Form for Emotion Regulation Strategies (HFERST): Factor Structure, Reliability, and Validity. Assessment. 2019 Jul;26(5):880-906. doi: 10.1177/1073191117720283. Epub 2017 Jul 21.
Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001 Sep;16(9):606-13. doi: 10.1046/j.1525-1497.2001.016009606.x.
Munsch S, Biedert E, Meyer A, Michael T, Schlup B, Tuch A, Margraf J. A randomized comparison of cognitive behavioral therapy and behavioral weight loss treatment for overweight individuals with binge eating disorder. Int J Eat Disord. 2007 Mar;40(2):102-13. doi: 10.1002/eat.20350.
Roth, M., Decker, O., Herzberg, P. Y., & Brähler, E. (2008). Dimensionality and norms of the Rosenberg Self-Esteem Scale in a German general population sample. European Journal of Psychological Assessment, 24(3), 190-197.
Rozental A, Kottorp A, Forsstrom D, Mansson K, Boettcher J, Andersson G, Furmark T, Carlbring P. The Negative Effects Questionnaire: psychometric properties of an instrument for assessing negative effects in psychological treatments. Behav Cogn Psychother. 2019 Sep;47(5):559-572. doi: 10.1017/S1352465819000018. Epub 2019 Mar 15.
Schroder J, Sautier L, Kriston L, Berger T, Meyer B, Spath C, Kother U, Nestoriuc Y, Klein JP, Moritz S. Development of a questionnaire measuring Attitudes towards Psychological Online Interventions-the APOI. J Affect Disord. 2015 Nov 15;187:136-41. doi: 10.1016/j.jad.2015.08.044. Epub 2015 Aug 28.
Schulte D. Patients' outcome expectancies and their impression of suitability as predictors of treatment outcome. Psychother Res. 2008 Jul;18(4):481-94. doi: 10.1080/10503300801932505.
Spitzer RL, Kroenke K, Williams JB, Lowe B. A brief measure for assessing generalized anxiety disorder: the GAD-7. Arch Intern Med. 2006 May 22;166(10):1092-7. doi: 10.1001/archinte.166.10.1092.
Topp CW, Ostergaard SD, Sondergaard S, Bech P. The WHO-5 Well-Being Index: a systematic review of the literature. Psychother Psychosom. 2015;84(3):167-76. doi: 10.1159/000376585. Epub 2015 Mar 28.
Chih CP, He J, Sly TS, Roberts EL Jr. Comparison of glucose and lactate as substrates during NMDA-induced activation of hippocampal slices. Brain Res. 2001 Mar 2;893(1-2):143-54. doi: 10.1016/s0006-8993(00)03306-0.
Hartmann S, Timm C, Barnow S, Rubel JA, Lalk C, Pruessner L. Web-Based Cognitive Behavioral Treatment for Bulimia Nervosa: A Randomized Clinical Trial. JAMA Netw Open. 2024 Jul 1;7(7):e2419019. doi: 10.1001/jamanetworkopen.2024.19019.
Hartmann S, Pruessner L, Rubel JA, Lalk C, Barnow S, Timm C. Applying a web-based self-help intervention for bulimia nervosa in routine care: Study protocol for a randomized controlled trial. Internet Interv. 2022 Feb 17;28:100512. doi: 10.1016/j.invent.2022.100512. eCollection 2022 Apr.
Other Identifiers
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Selfapy-BN
Identifier Type: -
Identifier Source: org_study_id
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