Evidence map›Paper›PMID 42348489›Full record

ArticlePLOS digital health2026

Exploring digital health user engagement: General app usage patterns from a clinical trial with the mLab App.

Thomas F Scherr, Austin Hardcastle, Carson P Moore, Dheemanth Majji, Lisa M Kuhns, Robert Garofalo, Rebecca Schnall

Registry-linked trialAbstract read
In one paragraph

Article in PLOS digital health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03803683 (mLab App for Improving Uptake of Rapid HIV Self-testing and Linking Youth to Care), which is not on this map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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.

NCT03803683 nacompletednot on this map

mLab App for Improving Uptake of Rapid HIV Self-testing and Linking Youth to Care

TypeinterventionalSponsorRebecca Schnall, RN, MPH, PhDRan2020 to 2023Enrolled525ConditionsHIV InfectionsArmsmLab App, HIV Prevention Information, HIV Home Tests
3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. 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

7 authors.

Thomas F ScherrDepartment of Chemistry, College of Arts and Science, Vanderbilt University, Nashville, Tennessee, United States of America.ORCID https://orcid.org/0000-0002-7077-535X
Austin HardcastleDepartment of Chemistry, College of Arts and Science, Vanderbilt University, Nashville, Tennessee, United States of America.
Carson P MooreDepartment of Chemistry, College of Arts and Science, Vanderbilt University, Nashville, Tennessee, United States of America.
Dheemanth MajjiDepartment of Chemistry, College of Arts and Science, Vanderbilt University, Nashville, Tennessee, United States of America.
Lisa M KuhnsDivision of Adolescent & Young Adult Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, United States of America.
Robert GarofaloDivision of Adolescent & Young Adult Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, United States of America.
Rebecca SchnallSchool of Nursing, Columbia University, New York, New York, United States of America.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The number of digital health applications has rapidly grown over recent years, but many of them are limited by sustainability and scalability. Paradata, the detailed interactions of a user with a piece of software, is straightforward to collect without disrupting the user-experience, and can provide a nuanced understanding of in-app user behavior. In this work we analyze paradata from the mLab App arm of a three-arm, multi-site randomized clinical trial (NYC and Chicago), in a sub-study that evaluates longitudinal, session-level interaction logs with multiple sessions per participant, (registered with Clinicaltrials.gov as NCT03803683), a mobile health application to facilitate at-home HIV testing in at-risk populations. We investigated application-level usage statistics to identify feature usage, as well as common navigational paths within the application. Temporal patterns were observed for login events and test-taking patterns. Despite being under-collected and underreported, paradata reveal feature gaps, guide targeted revisions for subsequent research and implementation, and deepen understanding of user behavior-enabling digital-health applications with lasting impact.

Identifiers

PMID42348489
PMCPMC13298777

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.