Evidence map›Paper›PMID 40301581›Full record

ArticleNPJ digital medicine2025

A meta-analysis of persuasive design, engagement, and efficacy in 92 RCTs of mental health apps.

Lee Valentine, Jordan D X Hinton, Kriti Bajaj, Larissa Boyd, Shaunagh O'Sullivan, Rory P Sorenson, Imogen H Bell, Miguel Sobredo Vega, Ping Liu, Wilma Peters and 8 more

Abstract read
In one paragraph

Article in NPJ digital medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

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  10. Reducing the 'Silence Between Sessions': A Qualitative Study on Youth and Professionals' Perspectives on Digital Tools for Suicide Prevention.Health expectations : an international journal of public participation in health care and health policy · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors.

Lee ValentineOrygen, Melbourne, VIC, Australia. lee.valentine@unimelb.edu.au.
Jordan D X HintonAustralian Research Centre in Sex, Health, and Society, Latrobe University, Melbourne, VIC, Australia.
Kriti BajajOrygen, Melbourne, VIC, Australia.
Larissa BoydOrygen, Melbourne, VIC, Australia.
Shaunagh O'SullivanOrygen, Melbourne, VIC, Australia.
Rory P SorensonOrygen, Melbourne, VIC, Australia.
Imogen H BellOrygen, Melbourne, VIC, Australia.
Miguel Sobredo VegaHospital Universitario Infanta Leonor, Madrid, Spain.
Ping LiuOrygen, Melbourne, VIC, Australia.
Wilma PetersOrygen, Melbourne, VIC, Australia.
Shaminka N MangelsdorfOrygen, Melbourne, VIC, Australia.
Thomas W WrenOrygen, Melbourne, VIC, Australia.
Carl MollerThe Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Melbourne, VIC, Australia.
Shane CrossOrygen, Melbourne, VIC, Australia.
Carla McEneryOrygen, Melbourne, VIC, Australia.
Sarah BendallOrygen, Melbourne, VIC, Australia.
Jennifer Nicholas *Orygen, Melbourne, VIC, Australia.
Mario Alvarez-Jimenez *Orygen, Melbourne, VIC, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This systematic review and meta-analysis examined the efficacy of digital mental health apps and the impact of persuasive design principles on intervention engagement and outcomes. Ninety-two RCTs and 16,728 participants were included in the meta-analyses. Findings indicate that apps significantly improved clinical outcomes compared to controls (g = 0.43). Persuasive design principles ranged from 1 to 12 per app (mode = 5). Engagement data were reported in 76% of studies, with 25 distinct engagement metrics identified, the most common being the percentage of users who completed the intervention and the average percentage of modules completed. No significant association was found between persuasive principles and either efficacy or engagement. With 25 distinct engagement metrics and 24% of studies not reporting engagement data, establishing overall engagement with mental health apps remains unfeasible. Standardising the definition of engagement and implementing a structured framework for reporting engagement metrics and persuasive design elements are essential steps toward advancing effective, engaging interventions in real-world settings.

Identifiers

PMID40301581
PMCPMC12041226

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.