Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Predictive Factors Associated with Future Decline in Swallowing Function among Japanese Older People Aged ≥ 75 Years

Komei Iwai
ORCID logo ,
Tetsuji Azuma
,
Takatoshi Yonenaga
,
Yasuyuki Sasai
,
Yoshinari Komatsu
,
Koichiro Tabata
,
Taketsugu Nomura
,
Iwane Sugiura
,
Yujo Inagawa
,
Yusuke Matsumoto
,
Seiji Nakashima
,
Yoshikazu Abe
,
Takaaki Tomofuji
* ORCID logo
Version 1 : Received: 23 April 2024 / Approved: 24 April 2024 / Online: 24 April 2024 (06:36:46 CEST)

How to cite: Iwai, K.; Azuma, T.; Yonenaga, T.; Sasai, Y.; Komatsu, Y.; Tabata, K.; Nomura, T.; Sugiura, I.; Inagawa, Y.; Matsumoto, Y.; Nakashima, S.; Abe, Y.; Tomofuji, T. Predictive Factors Associated with Future Decline in Swallowing Function among Japanese Older People Aged ≥ 75 Years. Preprints 2024, 2024041572. https://doi.org/10.20944/preprints202404.1572.v1 Iwai, K.; Azuma, T.; Yonenaga, T.; Sasai, Y.; Komatsu, Y.; Tabata, K.; Nomura, T.; Sugiura, I.; Inagawa, Y.; Matsumoto, Y.; Nakashima, S.; Abe, Y.; Tomofuji, T. Predictive Factors Associated with Future Decline in Swallowing Function among Japanese Older People Aged ≥ 75 Years. Preprints 2024, 2024041572. https://doi.org/10.20944/preprints202404.1572.v1

Abstract

Predictive factors associated with a decline in swallowing function after 2 years were examined in 3,409 Japanese older people aged ≥ 75 years who had undergone a dental checkup in Gifu Prefecture, Japan. Participants with normal swallowing function in a baseline survey in April 2018 were followed for 2 years. Swallowing function was assessed by a repetitive saliva swallowing test. After 2 years, 429 participants (13%) who could not swallow at least three times in 30 seconds were diagnosed as having a decline in swallowing function. Multivariate logistic regression analyses showed the decline in swallowing function after 2 years was associated with male gender (odds ratio [ORs]: 0.772; 95% confidence interval [CIs]: 0.615–0.969), age ≥ 81 years (presence; ORs: 1.523; 95% CIs: 1.224–1.895), support/care-need certification (presence; ORs: 1.815; 95% CIs: 1.361–2.394), periodontal pocket depth (PPD) ≥ 4 mm (presence; ORs: 1.469; 95% CIs: 1.163–1.856), difficulty in biting hard food (yes; ORs: 1.439; 95% CIs: 1.145–1.808), choking on tea and water (yes; ORs: 2.543; 95% CIs: 2.025–3.193), and dry mouth (yes; ORs: 1.316; 95% CIs: 1.052–1.646) at baseline. Therefore, the dental checkup items associated with a decline in swallowing function after 2 years were a PPD ≥ 4 mm, difficulty in biting hard food, choking on tea and water, and dry mouth. PPD status and confirming to the self-administered questionnaire about biting, choking, and dry mouth may be useful in predicting future decline in swallowing function.

Keywords

biting; choking; dry mouth; periodontal pocket depth; swallowing function; longitudinal study

Subject

Public Health and Healthcare, Public Health and Health Services

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Download PDF

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0
Get PDF Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.