Evidence map›Paper›PMID 31381501›Full record

ArticleJMIR mHealth and uHealth2019

German Mobile Apps in Rheumatology: Review and Analysis Using the Mobile Application Rating Scale (MARS).

Johannes Knitza, Koray Tascilar, Eva-Maria Messner, Marco Meyer, Diana Vossen, Almut Pulla, Philipp Bosch, Julia Kittler, Arnd Kleyer, Philipp Sewerin and 4 more

Abstract read
In one paragraph

Article in JMIR mHealth and uHealth, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed, 9 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

97 citing papers in PubMed, 9 syntheses or guidelines pooled it.

  1. Pooled it
  2. Smartphone Apps for Domestic Violence Prevention: A Systematic Review.International journal of environmental research and public health · 2023
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  16. Validity and reliability assessment of the Persian version of the User Mobile Application Rating Scale.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2026
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37 more citing papers are in PubMed but not listed here.

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

14 authors.

Johannes KnitzaDepartment of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany.ORCID 0000-0001-9695-0657
Koray TascilarDepartment of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany.ORCID 0000-0002-8109-826X
Eva-Maria MessnerDepartment for Clinical Psychology and Psychotherapy, Ulm University, Ulm, Germany.ORCID 0000-0001-6100-8354
Marco MeyerWorking Group Young Rheumatology, German Society for Rheumatology, Berlin, Germany.ORCID 0000-0002-6327-3415
Diana VossenWorking Group Young Rheumatology, German Society for Rheumatology, Berlin, Germany.ORCID 0000-0003-2602-7677
Almut PullaWorking Group Young Rheumatology, German Society for Rheumatology, Berlin, Germany.ORCID 0000-0001-8860-5730
Philipp BoschDepartment of Rheumatology and Immunology, Medical University Graz, Graz, Austria.ORCID 0000-0002-6783-6422
Julia KittlerDepartment of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany.ORCID 0000-0002-5497-704X
Arnd KleyerDepartment of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany.ORCID 0000-0002-2026-7728
Philipp SewerinWorking Group Young Rheumatology, German Society for Rheumatology, Berlin, Germany.ORCID 0000-0001-8465-6207
Johanna MuckeWorking Group Young Rheumatology, German Society for Rheumatology, Berlin, Germany.ORCID 0000-0001-8915-7837
Isabell HaaseWorking Group Young Rheumatology, German Society for Rheumatology, Berlin, Germany.ORCID 0000-0002-3412-6838
David SimonDepartment of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany.ORCID 0000-0001-8310-7820
Martin KruscheWorking Group Young Rheumatology, German Society for Rheumatology, Berlin, Germany.ORCID 0000-0002-0582-7790

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic rheumatic diseases need long-term treatment and professional supervision. Mobile apps promise to improve the lives of patients and physicians. In routine practice, however, rheumatology apps are largely unknown and little is known about their quality and safety.

objectiveThe aim of this study was to provide an overview of mobile rheumatology apps currently available in German app stores, evaluate app quality using the Mobile Application Rating Scale (MARS), and compile brief, ready-to-use descriptions for patients and rheumatologists.

methodsThe German App Store and Google Play store were systematically searched to identify German rheumatology mobile apps for patient and physician use. MARS was used to independently assess app quality by 8 physicians, 4 using Android and 4 using iOS smartphones. Apps were randomly assigned so that 4 apps were rated by all raters and the remaining apps were rated by two Android and two iOS users. Furthermore, brief app descriptions including app developers, app categories, and features were compiled to inform potential users and developers.

resultsIn total, 128 and 63 apps were identified in the German Google Play and App Store, respectively. After removing duplicates and only including apps that were available in both stores, 28 apps remained. Sixteen apps met the inclusion criteria, which were (1) German language, (2) availability in both app stores, (3) targeting patients or physicians as users, and (4) clearly including rheumatology or rheumatic diseases as subject matter. Exclusion criteria were (1) congress apps and (2) company apps with advertisements. Nine apps addressed patients and 7 apps addressed physicians. No clinical studies to support the effectiveness and safety of apps could be found. Pharmaceutical companies were the main developers of two apps. Rheuma Auszeit was the only app mainly developed by a patient organization. This app had the highest overall MARS score (4.19/5). Three out of 9 patient apps featured validated questionnaires. The median overall MARS score was 3.85/5, ranging from 2.81/5 to 4.19/5. One patient-targeted and one physician-targeted app had MARS scores >4/5. No significant rater gender or platform (iOS/Android) differences could be observed. The overall correlation between app store ratings and MARS scores was low and inconsistent between platforms.

conclusionsTo our knowledge, this is the first study that systematically identified and evaluated mobile apps in rheumatology for patients and physicians available in German app stores. We found a lack of supporting clinical studies, use of validated questionnaires, and involvement of academic developers. Overall app quality was heterogeneous. To create high-quality apps, closer cooperation led by patients and physicians is vital.

Indexed as

GermanyHumansMobile ApplicationsRheumatologyTechnology Assessment, BiomedicaleHealthmHealthMobile Application Rating Scalemobile appsrheumatology

Identifiers

PMID31381501
PMCPMC6699116

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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.