Evidence map›Paper›PMID 38951560›Full record

ArticleNPJ digital medicine2024

Do engagement and behavioural mechanisms underpin the effectiveness of the Drink Less app?

Claire Garnett, Larisa-Maria Dinu, Melissa Oldham, Olga Perski, Gemma Loebenberg, Emma Beard, Colin Angus, Robyn Burton, Matt Field, Felix Greaves and 6 more

Abstract read
In one paragraph

Article in NPJ digital medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
–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

5 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
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

16 authors.

Claire Garnett *Department of Behavioural Science and Health, University College London, London, UK. claire.garnett@bristol.ac.uk.ORCID http://orcid.org/0000-0002-6589-299X
Larisa-Maria Dinu *Department of Behavioural Science and Health, University College London, London, UK.
Melissa OldhamDepartment of Behavioural Science and Health, University College London, London, UK.
Olga PerskiUniversity of California, San Diego, San Diego, CA, USA.
Gemma LoebenbergDepartment of Behavioural Science and Health, University College London, London, UK.
Emma BeardDepartment of Behavioural Science and Health, University College London, London, UK.
Colin AngusSchool of Health and Related Research, University of Sheffield, Sheffield, UK.ORCID http://orcid.org/0000-0003-0529-4135
Robyn BurtonAddictions Directorate, Office for Health Improvement and Disparities, London, UK.
Matt FieldDepartment of Psychology, University of Sheffield, Sheffield, UK.
Felix GreavesDepartment of Primary Care and Public Health, Imperial College London, London, UK.
Matthew HickmanPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
Eileen KanerPopulation Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK.
Susan MichieCentre for Behaviour Change, University College London, London, UK.ORCID http://orcid.org/0000-0003-0063-6378
Marcus MunafòSchool of Psychological Science, University of Bristol, Bristol, UK.ORCID http://orcid.org/0000-0002-4049-993X
Elena PizzoDepartment of Applied Health Research, University College London, London, UK.
Jamie BrownDepartment of Behavioural Science and Health, University College London, London, UK.ORCID http://orcid.org/0000-0002-2797-5428

Funding

Cancer Research UK (CRUK) PRCRPG-Nov21\100002DH | National Institute for Health Research (NIHR) NIHR302923DH | NIHR | Public Health Research Programme (NIHR Public Health Research Programme) NIHR127651Medical Research Council MR/W026430/1
6 · The paper itself

Abstract

This is a process evaluation of a large UK-based randomised controlled trial (RCT) (n = 5602) evaluating the effectiveness of recommending an alcohol reduction app, Drink Less, compared with usual digital care in reducing alcohol consumption in increasing and higher risk drinkers. The aim was to understand whether participants' engagement ('self-reported adherence') and behavioural characteristics were mechanisms of action underpinning the effectiveness of Drink Less. Self-reported adherence with both digital tools was over 70% (Drink Less: 78.0%, 95% CI = 77.6-78.4; usual digital care: 71.5%, 95% CI = 71.0-71.9). Self-reported adherence to the intervention (average causal mediation effect [ACME] = -0.250, 95% CI = -0.42, -0.11) and self-monitoring behaviour (ACME = -0.235, 95% CI = -0.44, -0.03) both partially mediated the effect of the intervention (versus comparator) on alcohol reduction. Following the recommendation (self-reported adherence) and the tracking (self-monitoring behaviour) feature of the Drink Less app appear to be important mechanisms of action for alcohol reduction among increasing and higher risk drinkers.

Identifiers

PMID38951560
PMCPMC11217434

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Registered trials

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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.