Abstract

The aims of this study were to examine the effectiveness of a range of smartphone apps for managing symptoms of anxiety and depression and to assess the utility of a single-case research design for enhancing the evidence base for this mode of treatment delivery. The study was serendipitously impacted by the COVID-19 pandemic, which allowed for effectiveness to be additionally observed in the context of significant community distress. A pilot study was initially conducted using theSuperBetter app to evaluate the proposed methodology, which proved successful with the four finishing participants. In the main study, 39 participants commenced (27 females and 12 males,MAge = 34.04 years,SD = 12.20), with 29 finishing the intervention phase and completing post-intervention measures. At 6-month follow-up, a further three participants could not be contacted. This study used a digitally enhanced, multiple baseline across-individuals single-case research design. Participants were randomly assigned to the following apps:SuperBetter (n = 8),Smiling Mind (n = 7),MoodMission (n = 8),MindShift (n = 8), andDestressify (n = 8). Symptomatology and life functioning were measured at five different time points: pre-baseline/screening, baseline, intervention, 3-week post-intervention, and 6-month follow-up. Detailed individual perceptions and subjective ratings of the apps were also obtained from participants following the study’s completion. Data were analyzed using visual inspection, time-series analysis, and methods of statistical and clinical significance. Positive results were observed for all apps. Overall, more favorable outcomes were achieved by younger participants, those concurrently undertaking psychotherapy and/or psychotropic medication, those with anxiety and mixed anxiety and depression rather than stand-alone depression, and those with a shorter history of mental illness. Outcomes were generally maintained at 6-month follow-up. It was concluded that a diverse range of evidence-based therapies offered via apps can be effective in managing mental health and improving life functioning even during times of significant global unrest and, like all psychotherapies, are influenced by client features. Additionally, this single-case research design is a low-cost/high value means of assessing the effectiveness of mental health apps.Clinical Trial Registration: The study is registered with the Australian and New Zealand Clinical Trials Registry (ANZCTR), which is a primary registry in the World Health Organization Registry Network, registration number ACTRN12619001302145p (http://www.ANZCTR.org.au/ACTRN12619001302145p.aspx).

Highlights

  • There are over 10,000 mental health apps publicly available (Torous et al, 2018), but most of these have not been developed using established theoretical frameworks (Marshall et al, 2020a), or by recognized mental health experts (Shen et al, 2015; Alyami et al, 2017)

  • This study evaluated the effectiveness of five mental health apps: SuperBetter, Smiling Mind, MoodMission, MindShift, and Destressify

  • All 29 participants who completed the main study recorded at least a moderate improvement in some aspect of their pre-intervention presentation, indicating that using these mobile apps may aid in improving the mental health of people with symptoms of anxiety and/or depression, including in the context of a global pandemic such as COVID-19

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Summary

Introduction

There are over 10,000 mental health apps publicly available (Torous et al, 2018), but most of these have not been developed using established theoretical frameworks (Marshall et al, 2020a), or by recognized mental health experts (Shen et al, 2015; Alyami et al, 2017). Mental health apps have gone largely unregulated by government authorities in most parts of the world (Marshall et al, 2020d), but there is evidence that this is changing as it becomes apparent that regulatory oversight of mental health apps may improve the quality of the available apps. Increased regulation may assist app developers to create apps that use evidence-based, “best practice” principles and may assist clinicians and consumers in choosing efficacious apps. The possible downside of regulation may be that smaller app developers with limited financial resources may not be able to afford to pay for their app to be regulated or “assessed,” and this in turn may lead to novel app interventions being restricted or blocked from being widely available

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