List of Titles

Targeting dietary restraint to reduce binge eating : a randomised controlled trial of a blended internet- and smartphone app-based intervention

- Linardon, Jake, Messer, Mariel, Shatte, Adrian, Skvarc, David, Rosato, John, Rathgen, April, Fuller-Tyszkiewicz, Matthew

Authors: Linardon, Jake , Messer, Mariel , Shatte, Adrian , Skvarc, David , Rosato, John , Rathgen, April , Fuller-Tyszkiewicz, Matthew
Date: 2023
Type: Text , Journal article
Relation: Psychological Medicine Vol. 53, no. 4 (2023), p. 1277-1287
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Reviewed:
Description: Background Existing internet-based prevention and treatment programmes for binge eating are composed of multiple distinct modules that are designed to target a broad range of risk or maintaining factors. Such multi-modular programmes (1) may be unnecessarily long for those who do not require a full course of intervention and (2) make it difficult to distinguish those techniques that are effective from those that are redundant. Since dietary restraint is a well-replicated risk and maintaining factor for binge eating, we developed an internet- and app-based intervention composed solely of cognitive-behavioural techniques designed to modify dietary restraint as a mechanism to target binge eating. We tested the efficacy of this combined selective and indicated prevention programme in 403 participants, most of whom were highly symptomatic (90% reported binge eating once per week). Method Participants were randomly assigned to the internet intervention (n = 201) or an informational control group (n = 202). The primary outcome was objective binge-eating frequency. Secondary outcomes were indices of dietary restraint, shape, weight, and eating concerns, subjective binge eating, disinhibition, and psychological distress. Analyses were intention-to-treat. Results Intervention participants reported greater reductions in objective binge-eating episodes compared to the control group at post-test (small effect size). Significant effects were also observed on each of the secondary outcomes (small to large effect sizes). Improvements were sustained at 8 week follow-up. Conclusions Highly focused digital interventions that target one central risk/maintaining factor may be sufficient to induce meaningful change in core eating disorder symptoms. © The Author(s), 2021. Published by Cambridge University Press.

Effects of participant's choice of different digital interventions on outcomes for binge-spectrum eating disorders : a pilot doubly randomized preference trial

- Linardon, Jake, Shatte, Adrian, Messer, Mariel, McClure, Zoe, Fuller-Tyszkiewicz, Matthew

Authors: Linardon, Jake , Shatte, Adrian , Messer, Mariel , McClure, Zoe , Fuller-Tyszkiewicz, Matthew
Date: 2023
Type: Text , Journal article
Relation: Behavior Therapy Vol. 54, no. 2 (2023), p. 303-314
Full Text: false
Reviewed:
Description: It is unclear whether offering individuals a choice between different digital intervention programs affects treatment outcomes. To generate initial insights, we conducted a pilot doubly randomized preference trial to test whether offering individuals with binge-spectrum eating disorder a choice between two digital interventions is causally linked with superior outcomes than random assignment to these interventions. Participants with recurrent binge eating were randomized to either a choice (n = 77) or no-choice (n = 78) group. Those in the choice group could choose one of the two digital programs, while those in the no-choice group were assigned a program at random. The two digital interventions (a broad and a focused program) took 4 weeks to complete, were based on cognitive-behavioral principles and have demonstrated comparable efficacy, but differ in scope, content, and targeted change mechanisms. Most participants (79%) allocated to the choice condition chose the broad program. While both groups experienced improvements in primary (Eating Disorder Examination Questionnaire global scores and number of binge eating episodes over the past month) and secondary outcomes (dietary restraint, body image concerns, etc.), no significant between-group differences were observed. The two groups did not differ on dropout rates, nor on most indices of intervention engagement. Findings provide preliminary insights towards the role of client preferences in digital mental health interventions for eating disorders. Client preferences may not determine outcomes when digital interventions are based on similar underlying principles, although larger trials are needed to confirm this. © 2023

E-mental health interventions for the treatment and prevention of eating disorders : an updated systematic review and meta-analysis

- Linardon, Jake, Shatte, Adrian, Messer, Mariel, Firth, Joseph, Fuller-Tyszkiewicz, Matthew

Authors: Linardon, Jake , Shatte, Adrian , Messer, Mariel , Firth, Joseph , Fuller-Tyszkiewicz, Matthew
Date: 2020
Type: Text , Journal article
Relation: Journal of Consulting and Clinical Psychology Vol. 88, no. 11 (2020), p. 994-1007
Full Text: false
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Description: Objectives: E-mental health (digital) interventions can help overcome existing barriers that stand in the way of people receiving help for an eating disorder (ED). Although e-mental health interventions for treating and preventing EDs have been met with enthusiasm, earlier reviews brought attention to poor quality of evidence, and offered solutions to enhance their evidence base. To assess developments in the field, we conducted an updated meta-analysis on the efficacy of e-mental health interventions for treating and preventing EDs, paying attention to whether trial quality and outcomes have improved in recent trials. We also assessed whether user-centered design principles have been implemented in existing digital interventions. Method: Four databases were searched for RCTs of digital interventions for treating and preventing EDs. Thirty-six RCTs (28 prevention- and 8 treatment-focused) were included. Results: Some evidence that study quality improved in recent prevention-focused trials was found. Few trials involved the end-user in the design or development stage of the intervention. Issues with intervention engagement were noted, and 1 in 4 participants dropped out from prevention- and treatment-focused trials. Digital interventions were more effective than control conditions in reducing established risk factors and symptoms in prevention- (g’s = 0.19 to 0.43) and treatment-focused trials (g’s = 0.29 to 0.69), respectively. Effect sizes have not increased in recent trials. Few trials compared a digital intervention with a face-to-face intervention. Whether digital interventions can prevent ED onset is unclear. Conclusion: Digital interventions are a promising approach to ED treatment and prevention, but improvements are still needed. Three key recommendations are provided. (PsycInfo Database Record (c) 2020 APA, all rights reserved)What is the public health significance of this article?: E-mental health interventions show promise in addressing eating disorder symptoms and risk factors. However, issues with study quality, drop-out, and engagement are noted, and researchers are encouraged to involve the end-user in all stages of the intervention development and implementation to optimize outcomes. (PsycInfo Database Record (c) 2020 APA, all rights reserved) © 2020 American Psychological Association

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