Evidence map›Paper›PMID 34299777›Full record

ArticleInternational journal of environmental research and public health2021

Accuracy of a Smartphone Application Measuring Snoring in Adults-How Smart Is It Actually?

Katharina Klaus, Anna-Lena Stummer, Sabine Ruf

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06900530 (Evaluating Sleep Quality With Emerging Technologies), which is not on this map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.6field-weighted citation impact, top 17% of its field
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.

NCT06900530 completednot on this mapstarted 2024, after this paper: background citation

Evaluating Sleep Quality With Emerging Technologies

Typeobservational_patient_registrySponsorCase Western Reserve UniversityRan2024 to 2025Enrolled52ConditionsSnoring, Sleep Disturbances, Hypoxia, Obstructive Sleep Apnea (OSA)
3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 15 citations in OpenAlex.

  1. The impact of nasal valve surgery on snoring.Brazilian journal of otorhinolaryngology · 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

3 authors at 1 institution in 1 country.

Katharina KlausDepartment of Orthodontics, Justus-Liebig University Giessen, 35392 Giessen, Germany.ORCID 0000-0002-4929-9213
Anna-Lena StummerDepartment of Orthodontics, Justus-Liebig University Giessen, 35392 Giessen, Germany.
Sabine RufDepartment of Orthodontics, Justus-Liebig University Giessen, 35392 Giessen, Germany.
Justus-Liebig-Universität Gießen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

About 40% of the adult population is affected by snoring, which is closely related to obstructive sleep apnea (OSA) and can be associated with serious health implications. Commercial smartphone applications (apps) offer the possibility of monitoring snoring at home. However, the number of validation studies addressing snoring apps is limited. The purpose of the present study was to assess the accuracy of recorded snoring using the free version of the app SnoreLab (Reviva Softworks Ltd., London, UK) in comparison to a full-night polygraphic measurement (Miniscreen plus, Löwenstein Medical GmbH & Co., KG, Bad Ems, Germany). Nineteen healthy adult volunteers (4 female, 15 male, mean age: 38.9 ± 19.4 years) underwent simultaneous polygraphic and SnoreLab app measurement for one night at home. Parameters obtained by the SnoreLab app were: starting/ending time of monitoring, time in bed, duration and percent of quiet sleep, light, loud and epic snoring, total snoring time and Snore Score, a specific score obtained by the SnoreLab app. Data obtained from polygraphy were: starting/ending time of monitoring, time in bed, total snoring time, snore index (SI), snore index obstructive (SI obstructive) and apnea-hypopnea-index (AHI). For different thresholds of percentage snoring per night, accuracy, sensitivity, specificity, positive and negative predictive values were calculated. Comparison of methods was undertaken by Spearman-Rho correlations and Bland-Altman plots. The SnoreLab app provides acceptable accuracy values measuring snoring >50% per night: 94.7% accuracy, 100% sensitivity, 94.1% specificity, 66.6% positive prediction value and 100% negative prediction value. Best agreement between both methods was achieved in comparing the sum of loud and epic snoring ratios obtained by the SnoreLab app with the total snoring ratio measured by polygraphy. Obstructive events could not be detected by the SnoreLab app. Compared to polygraphy, the SnoreLab app provides acceptable accuracy values regarding the measurement of especially heavy snoring.

Indexed as

Sleep Apnea, ObstructiveSnoringAdultFemaleHumansMaleMiddle AgedPolysomnographyPredictive Value of TestsSmartphoneYoung AdultappapplicationeHealthmHealthobstructive sleep apneaOSAsmartphonesnoring

Identifiers

PMID34299777
PMCPMC8304057
OpenAlexW3180780388

What OpenQuestion holds

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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.