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BMC Geriatrics
Published in: BMC Geriatrics 1/2023

Open Access 01-12-2023 | Research

Factors associated with weight loss by age among community-dwelling older people

Authors: Tomoko Yano, Kayo Godai, Mai Kabayama, Hiroshi Akasaka, Yasushi Takeya, Koichi Yamamoto, Saori Yasumoto, Yukie Masui, Yasumichi Arai, Kazunori Ikebe, Tatsuro Ishizaki, Yasuyuki Gondo, Hiromi Rakugi, Kei Kamide

Published in: BMC Geriatrics | Issue 1/2023

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Abstract

Background

Factors associated with weight loss in community-dwelling older people have been reported in several studies, but few studies have examined factors associated with weight loss by age groups. The purpose of this study was to clarify factors associated with weight loss by age in community-dwelling older people through a longitudinal study.

Methods

Participants in the SONIC study (Longitudinal Epidemiological Study of the Elderly) were community-dwelling people aged 70 or older. The participants were divided into two groups: 5% weight loss and maintenance groups, and compared. In addition, we examined factors affecting weight loss by age. The analysis method used was the χ2 test, and the t-test was used for comparison of the two groups. Factors associated with 5% weight loss at 3 years were examined using logistic regression analysis with sex, age, married couple, cognitive function, grip strength, and the serum albumin level as explanatory variables.

Results

Of the 1157 subjects, the proportions showing 5% weight loss after 3 years among all subjects, those aged 70 years, 80 years, and 90 years, were 20.5, 13.8, 26.8, and 30.5%, respectively. In logistic regression analysis, factors associated with 5% weight loss at 3 years by age were influenced by BMI of 25 or higher (OR = 1.90, 95%CI = 1.08–3.34, p = 0.026), a married couple (OR = 0.49, 95% = 0.28–0.86, p = 0.013), serum albumin level below 3.8 g/dL (OR = 10.75, 95% = 1.90–60.73, p = 0.007) at age 70, and the grip strength at age 90 (OR = 1.24, 95%CI = 1.02–1.51, p = 0.034), respectively.

Conclusions

The results suggest that factors associated with weight loss by age in community-dwelling older people through a longitudinal study differ by age. In the future, this study will be useful to propose effective interventions to prevent factors associated with weight loss by age in community-dwelling older people.
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Metadata
Title
Factors associated with weight loss by age among community-dwelling older people
Authors
Tomoko Yano
Kayo Godai
Mai Kabayama
Hiroshi Akasaka
Yasushi Takeya
Koichi Yamamoto
Saori Yasumoto
Yukie Masui
Yasumichi Arai
Kazunori Ikebe
Tatsuro Ishizaki
Yasuyuki Gondo
Hiromi Rakugi
Kei Kamide
Publication date
01-12-2023
Publisher
BioMed Central
Published in
BMC Geriatrics / Issue 1/2023
Electronic ISSN: 1471-2318
DOI
https://doi.org/10.1186/s12877-023-03993-0

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