Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic Review

BackgroundDigital health interventions (DHIs) are efficacious for several mental disorders in youth; however, integrated, evidence-based knowledge about the mechanisms of change in these interventions is lacking. ObjectiveThis systematic review aims to comprehensi...

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Main Authors: Matthias Domhardt, Sophie Engler, Hannah Nowak, Arne Lutsch, Amit Baumel, Harald Baumeister
Format: Article
Language:English
Published: JMIR Publications 2021-11-01
Series:Journal of Medical Internet Research
Online Access:https://www.jmir.org/2021/11/e29742
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author Matthias Domhardt
Sophie Engler
Hannah Nowak
Arne Lutsch
Amit Baumel
Harald Baumeister
author_facet Matthias Domhardt
Sophie Engler
Hannah Nowak
Arne Lutsch
Amit Baumel
Harald Baumeister
author_sort Matthias Domhardt
collection DOAJ
description BackgroundDigital health interventions (DHIs) are efficacious for several mental disorders in youth; however, integrated, evidence-based knowledge about the mechanisms of change in these interventions is lacking. ObjectiveThis systematic review aims to comprehensively evaluate studies on mediators and mechanisms of change in different DHIs for common mental disorders in children and adolescents. MethodsA systematic literature search of the electronic databases Cochrane Central Register of Controlled Trials, Embase, MEDLINE, and PsycINFO was conducted, complemented by backward and forward searches. Two independent reviewers selected studies for inclusion, extracted the data, and rated the methodological quality of eligible studies (ie, risk of bias and 8 quality criteria for process research). ResultsA total of 25 studies that have evaluated 39 potential mediators were included in this review. Cognitive mediators were the largest group of examined intervening variables, followed by a broad range of emotional and affective, interpersonal, parenting behavior, and other mediators. The mediator categories with the highest percentages of significant intervening variables were the groups of affective mediators (4/4, 100%) and combined cognitive mediators (13/19, 68%). Although more than three-quarters of the eligible studies met 5 or more quality criteria, causal conclusions have been widely precluded. ConclusionsThe findings of this review might guide the empirically informed advancement of DHIs, contributing to improved intervention outcomes, and the discussion of methodological recommendations for process research might facilitate mediation studies with more pertinent designs, allowing for conclusions with higher causal certainty in the future.
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spelling doaj.art-271a977d41b04211b821f6bec4613a252023-08-28T19:51:58ZengJMIR PublicationsJournal of Medical Internet Research1438-88712021-11-012311e2974210.2196/29742Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic ReviewMatthias Domhardthttps://orcid.org/0000-0002-3243-8926Sophie Englerhttps://orcid.org/0000-0001-5867-9552Hannah Nowakhttps://orcid.org/0000-0002-1017-697XArne Lutschhttps://orcid.org/0000-0002-9432-6620Amit Baumelhttps://orcid.org/0000-0002-7043-8898Harald Baumeisterhttps://orcid.org/0000-0002-2040-661X BackgroundDigital health interventions (DHIs) are efficacious for several mental disorders in youth; however, integrated, evidence-based knowledge about the mechanisms of change in these interventions is lacking. ObjectiveThis systematic review aims to comprehensively evaluate studies on mediators and mechanisms of change in different DHIs for common mental disorders in children and adolescents. MethodsA systematic literature search of the electronic databases Cochrane Central Register of Controlled Trials, Embase, MEDLINE, and PsycINFO was conducted, complemented by backward and forward searches. Two independent reviewers selected studies for inclusion, extracted the data, and rated the methodological quality of eligible studies (ie, risk of bias and 8 quality criteria for process research). ResultsA total of 25 studies that have evaluated 39 potential mediators were included in this review. Cognitive mediators were the largest group of examined intervening variables, followed by a broad range of emotional and affective, interpersonal, parenting behavior, and other mediators. The mediator categories with the highest percentages of significant intervening variables were the groups of affective mediators (4/4, 100%) and combined cognitive mediators (13/19, 68%). Although more than three-quarters of the eligible studies met 5 or more quality criteria, causal conclusions have been widely precluded. ConclusionsThe findings of this review might guide the empirically informed advancement of DHIs, contributing to improved intervention outcomes, and the discussion of methodological recommendations for process research might facilitate mediation studies with more pertinent designs, allowing for conclusions with higher causal certainty in the future.https://www.jmir.org/2021/11/e29742
spellingShingle Matthias Domhardt
Sophie Engler
Hannah Nowak
Arne Lutsch
Amit Baumel
Harald Baumeister
Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic Review
Journal of Medical Internet Research
title Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic Review
title_full Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic Review
title_fullStr Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic Review
title_full_unstemmed Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic Review
title_short Mechanisms of Change in Digital Health Interventions for Mental Disorders in Youth: Systematic Review
title_sort mechanisms of change in digital health interventions for mental disorders in youth systematic review
url https://www.jmir.org/2021/11/e29742
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