A Mobile Cough Strength Evaluation Device Using Cough Sounds

Sensors 18 巻 11 号 3810- 頁 2018-11-07 発行
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タイトル ( eng )
A Mobile Cough Strength Evaluation Device Using Cough Sounds
作成者
Umayahara Yasutaka
Kawae Toshihiro
Otsuka Akira
収録物名
Sensors
18
11
開始ページ 3810
抄録
Although cough peak flow (CPF) is an important measurement for evaluating the risk of cough dysfunction, some patients cannot use conventional measurement instruments, such as spirometers, because of the configurational burden of the instruments. Therefore, we previously developed a cough strength estimation method using cough sounds based on a simple acoustic and aerodynamic model. However, the previous model did not consider age or have a user interface for practical application. This study clarifies the cough strength prediction accuracy using an improved model in young and elderly participants. Additionally, a user interface for mobile devices was developed to record cough sounds and estimate cough strength using the proposed method. We then performed experiments on 33 young participants (21.3 ± 0.4 years) and 25 elderly participants (80.4 ± 6.1 years) to test the effect of age on the CPF estimation accuracy. The percentage error between the measured and estimated CPFs was approximately 6.19%. In addition, among the elderly participants, the current model improved the estimation accuracy of the previous model by a percentage error of approximately 6.5% (p < 0.001). Furthermore, Bland-Altman analysis demonstrated no systematic error between the measured and estimated CPFs. These results suggest that the developed device can be applied for daily CPF measurements in clinical practice.
著者キーワード
cough strength
cough sound
cough peak flow
mobile device
iOS
内容記述
This work was supported by JSPS KAKENHI, grant number 16K16475.
言語
英語
資源タイプ 学術雑誌論文
出版者
MDPI
発行日 2018-11-07
権利情報
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 1424-8220
[DOI] 10.3390/s18113810
[DOI] https://doi.org/10.3390/s18113810