• Am J Prev Med · Jan 2023

    Oral Health and Mortality Among Older Adults: A Doubly Robust Survival Analysis.

    • Jiao Yu, Weidi Qin, Wenxuan Huang, and Kristi Thomas.
    • IPUMS, Institute for Social Research and Data Innovation, University of Minnesota, Minneapolis, Minnesota. Electronic address: yu015354@umn.edu.
    • Am J Prev Med. 2023 Jan 1; 64 (1): 9169-16.

    IntroductionEvidence on the association between oral health and mortality is inconclusive, and few studies have accounted for the nonrandom selection bias in estimating their relationship. This study aims to investigate the link between oral health and mortality in community-dwelling older adults by adjusting for confounding factors with a doubly robust survival estimation.MethodsData came from the third National Health and Nutrition Examination Survey (1988-1994) and were linked to the National Death Index mortality data through December 2015. The analytic sample consisted of 4,880 adults aged ≥60 years. Oral health measures included objective clinical indicators (edentulism, periodontitis, and untreated dental caries) and self-rated oral health. Cox proportional hazards regression models and inverse probability weighting with regression adjustment for observational survival-time estimation were utilized to assess the relationship between oral health and mortality. Analyses were conducted in 2021.ResultsEdentulism (average treatment effect= -26.13, 95% CI= -48.69, -3.57) was associated with a reduction in survival time. Periodontal conditions and dental caries were related to all-cause mortality in Cox models but became nonsignificant when inverse probability weighting with regression adjustment survival estimation was applied. Good self-rated oral health was significantly related to an increase in survival time (average treatment effect=21.50; 95% CI= 4.92, 38.07).ConclusionsBoth objective and subjective oral health are risk factors for mortality among older adults. Improving access to dental screening and treatment among community-dwelling older adults has the potential to reduce oral health‒related risks of mortality.Copyright © 2022 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

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