%0 Journal Article
%@ 1438-8871
%I JMIR Publications
%V 25
%N 
%P e41845
%T Repeatability, Reproducibility, and Concurrent Validity of a Stethoscope and Health App System for the Quantification of Breath Rate in Healthy Adults: Repeatability and Validity Study
%A Becerro de Bengoa Vallejo,Ricardo
%A Losa Iglesias,Marta Elena
%A Robles Sanchez,Oscar David
%+ Departamento de Enfermería y Estomatología, Facultad de CC de la Salud, Universidad Rey Juan Carlos, Av de Atenas S/N, Alcorcón, 28922, Spain, 34 616962413, marta.losa@urjc.es
%K breath rate
%K stethoscope
%K smartphone app
%K breathing rate
%K vital sign
%K respiration
%K mobile phone app
%K health app
%K mobile app
%K mHealth
%K mobile health
%K measurement
%K breathing
%K assessment
%K monitoring
%K reliability
%K validity
%K medical device
%K medical instrument
%D 2023
%7 12.1.2023
%9 Original Paper
%J J Med Internet Res
%G English
%X Background: Apps for smartphones that can measure the breathing rate easily can be downloaded. Objective: The aim of this study was to demonstrate agreement in measuring breath rates between the stethoscope and Breath Counter health app. Methods: We performed a repeatability study with 56 healthy volunteers. The patient’s demographic data and breathing rates per minute were collected. Breathing rates were measured via two methods: (1) using a stethoscope placed in the upper area of the right lung and (2) a Breath Counter app developed by Vadion on a Samsung Fold smartphone. Results: This study demonstrated high repeatability and validity with respect to the breathing rate parameter of healthy adults using the aforementioned 2 systems. Intrasession repeatability measure using the intraclass correlation coefficient was >0.962, indicating excellent repeatability. Moreover, the intraclass correlation coefficient between methods was 0.793, indicating good repeatability, and coefficients of variation of method errors values were 1.83% with very low values in terms of other repeatability parameters. We found significant correlation coefficients and no systematic differences between the app and stethoscope methods. Conclusions: The app method may be attractive to individuals who require repeatability in a recreational setting. 
%M 36633892
%R 10.2196/41845
%U https://www.jmir.org/2023/1/e41845
%U https://doi.org/10.2196/41845
%U http://www.ncbi.nlm.nih.gov/pubmed/36633892