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Mortality- and Health-Related Factors in a Community-Dwelling of Oldest-Older Adults at the Age of 90: A 10-Year Follow-Up Study

Author

Listed:
  • Yoshiaki Nomura

    (Department of Translational Research, School of Dental Medicine, Tsurumi University, Yokohama 230-8501, Japan)

  • Mieko Shimada

    (Department of Dental Hygiene, Chiba Prefectural University of Health Sciences, Chiba 261-0014, Japan)

  • Erika Kakuta

    (Department of Oral Bacteriology, School of Dental Medicine, Tsurumi University, Yokohama 230-8501, Japan)

  • Ayako Okada

    (Department of Translational Research, School of Dental Medicine, Tsurumi University, Yokohama 230-8501, Japan)

  • Ryoko Otsuka

    (Department of Translational Research, School of Dental Medicine, Tsurumi University, Yokohama 230-8501, Japan)

  • Yasuko Tomizawa

    (Department of Cardiovascular Surgery, Tokyo Women’s Medical University, Tokyo 162-8666, Japan)

  • Chieko Taguchi

    (Department of Preventive and Public Oral Health, School of Dentistry at Matsudo, Nihon University, Matsudo 470-2101, Japan)

  • Kazumune Arikawa

    (Department of Preventive and Public Oral Health, School of Dentistry at Matsudo, Nihon University, Matsudo 470-2101, Japan)

  • Hideki Daikoku

    (Iwate Dental Association, Morioka 020-0045, Japan)

  • Tamotsu Sato

    (Iwate Dental Association, Morioka 020-0045, Japan)

  • Nobuhiro Hanada

    (Department of Translational Research, School of Dental Medicine, Tsurumi University, Yokohama 230-8501, Japan)

Abstract

Mortality is obviously intended for epidemiological studies of community-dwelling older adults. There are several health-related factors associated with nutritional status and mortality. The aim of this study was to elucidate the risk factor for mortality in community-dwelling oldest-older adults at the age of 90 and clarify the structure of health-related factors associated with mortality. A 10-year follow-up study was performed for 93 subjects at the age of 90. The mean and median of their survival days were 2373 and 2581 days for women, and 1694 and 1793 days for men. By Cox’s proportional hazards model, health-related factors associated with mortality were self-assessed for chewing ability, activities of daily living (ADLs), serum albumin, total cholesterol, serum creatinine, and gripping power for women but not for men. These factors interacted with each other, and the association of these factors was different in women and men. Self-assessed chewing ability was a powerful risk factor for mortality in women at the age of 90. It acted independently from nutritional status. For older adults, addressing healthy food choices together with improved oral functions is useful. However, risk factors for mortality may depend on the life stage of subjects. To investigate the risk factor for the mortality, the life course approach is necessary.

Suggested Citation

  • Yoshiaki Nomura & Mieko Shimada & Erika Kakuta & Ayako Okada & Ryoko Otsuka & Yasuko Tomizawa & Chieko Taguchi & Kazumune Arikawa & Hideki Daikoku & Tamotsu Sato & Nobuhiro Hanada, 2020. "Mortality- and Health-Related Factors in a Community-Dwelling of Oldest-Older Adults at the Age of 90: A 10-Year Follow-Up Study," IJERPH, MDPI, vol. 17(24), pages 1-17, December.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:24:p:9584-:d:465898
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    References listed on IDEAS

    as
    1. Kalene Pek & Justin Chew & Jun Pei Lim & Suzanne Yew & Cai Ning Tan & Audrey Yeo & Yew Yoong Ding & Wee Shiong Lim, 2020. "Social Frailty Is Independently Associated with Mood, Nutrition, Physical Performance, and Physical Activity: Insights from a Theory-Guided Approach," IJERPH, MDPI, vol. 17(12), pages 1-15, June.
    2. Magnus Zingmark & Fredrik Norström & Lars Lindholm & Synneve Dahlin-Ivanoff & Susanne Gustafsson, 2019. "Modelling long-term cost-effectiveness of health promotion for community-dwelling older people," European Journal of Ageing, Springer, vol. 16(4), pages 395-404, December.
    3. Yoshiaki Nomura & Ryoko Otsuka & Wit Yee Wint & Ayako Okada & Ryo Hasegawa & Nobuhiro Hanada, 2020. "Tooth-Level Analysis of Dental Caries in Primary Dentition in Myanmar Children," IJERPH, MDPI, vol. 17(20), pages 1-13, October.
    Full references (including those not matched with items on IDEAS)

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