Sato, Y;
Aida, J;
Kondo, K;
Tsuboya, T;
Watt, RG;
Yamamoto, T;
Koyama, S;
... Osaka, K; + view all
(2016)
Tooth Loss and Decline in Functional Capacity: A Prospective Cohort Study from the Japan Gerontological Evaluation Study.
Journal of the American Geriatrics Society
, 64
(11)
pp. 2336-2342.
10.1111/jgs.14324.
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Abstract
OBJECTIVES: To describe associations between tooth loss and changes in higher-level functional capacity. DESIGN: Prospective cohort study. SETTING: Twenty-four Japanese municipalities between 2010 and 2013. PARTICIPANTS: Functionally independent community-dwelling persons aged 65 and older (N = 62,333). MEASUREMENTS: Self-reported number of teeth was used as an exposure variable. The outcome was changes in higher-level functional capacity measured using the Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC), which consists of three domains: instrumental activities of daily living, intellectual activity, and social roles. The TMIG-IC score ranges from 0 (lowest function) to 13 (highest function). All covariates were chosen from baseline demographic, socioeconomic, health behavior, and health variables based upon evidence from previous studies. Inverse-probability weighting (IPW) with propensity score and multiple linear regression, estimating nonstandardized coefficients (β) and 95% confidence intervals (CIs), were used. RESULTS: The baseline response rate was 65.2%, and the follow-up rate was 70.1%. During the follow-up period, participants' TMIG-IC score declined by an average of 0.247 points (standard deviation: 1.446). The results showed a significant dose-response association between tooth loss and decline in higher-level functional capacity in multiple linear regression models. IPW models estimated the increment in TMIG-IC score (β = 0.170, 95% CI = 0.114-0.227) if edentulous participants gained 20 or more natural teeth. CONCLUSION: Tooth loss is associated with future decline in higher-level functional capacity. IPW models suggest that treatment for tooth loss attenuates decline in higher-level functional capacity.
| Type: | Article |
|---|---|
| Title: | Tooth Loss and Decline in Functional Capacity: A Prospective Cohort Study from the Japan Gerontological Evaluation Study |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/jgs.14324 |
| Publisher version: | http://doi.org/10.1111/jgs.14324 |
| Language: | English |
| Additional information: | © 2016, Copyright the Authors Journal compilation © 2016, The American Geriatrics Society. This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Independent living, oral health, propensity score, tooth loss |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Epidemiology and Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Epidemiology and Health > Epidemiology and Public Health |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1518689 |
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