@Article{info:doi/10.2196/41845,
author="Becerro de Bengoa Vallejo, Ricardo
and Losa Iglesias, Marta Elena
and Robles Sanchez, Oscar David",
title="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",
journal="J Med Internet Res",
year="2023",
month="Jan",
day="12",
volume="25",
pages="e41845",
keywords="breath rate; stethoscope; smartphone app; breathing rate; vital sign; respiration; mobile phone app; health app; mobile app; mHealth; mobile health; measurement; breathing; assessment; monitoring; reliability; validity; medical device; medical instrument",
abstract="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. ",
issn="1438-8871",
doi="10.2196/41845",
url="https://www.jmir.org/2023/1/e41845",
url="https://doi.org/10.2196/41845",
url="http://www.ncbi.nlm.nih.gov/pubmed/36633892"
}