A Mobile Cough Strength Evaluation Device Using Cough Sounds

URI http://harp.lib.hiroshima-u.ac.jp/hcu/metadata/74
File
Title
A Mobile Cough Strength Evaluation Device Using Cough Sounds
Author
氏名 馬屋原 康高
ヨミ ウマヤハラ ヤスタカ
別名 Umayahara Yasutaka
氏名 曽 智
ヨミ ソウ ズ
別名 Sou Zu
氏名 関川 清一
ヨミ セキカワ キヨカズ
別名 Sekikawa Kiyokazu
氏名 河江 敏広
ヨミ カワエ トシヒロ
別名 Kawae Toshihiro
氏名 大塚 彰
ヨミ オオツカ アキラ
別名 Otsuka Akira
氏名 辻 敏夫
ヨミ ツジ トシオ
別名 Tsuji TOSHIO
Subject
cough strength
cough sound
cough peak flow
mobile device
iOS
NDC
493.3
007.64
Abstract

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.

Description Peer Reviewed
Journal Title
Sensors
Volume
18
Issue
Issue 11
Spage
3810(1)
Epage
3810(13)
Published Date
2018-11-07
Publisher
MDPI AG
ISSN
1424-8220
DOI
10.3390/s18113810
Language
eng
NIIType
Journal Article
Text Version
出版社版
Rights
(C)MDPI AG
Set
hcu