Association between body mass index and mortality in the Korean elderly: A nationwide cohort study

The objective of this study was to investigate the relationship between body mass index (BMI) and mortality in the elderly. This study was a nation-wide population-based retrospective cohort study of the National Health Insurance System-Senior Database (NHIS-SD). In this study, a total of 75,856 sub...

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Veröffentlicht in:PloS one 2018-11, Vol.13 (11), p.e0207508-e0207508
Hauptverfasser: Lee, Seung-Hyun, Kim, Do-Hoon, Park, Joo-Hyun, Kim, Shinhye, Choi, Moonyoung, Kim, Hyonchong, Seul, Da Eun, Park, Soo Gyeong, Jung, Jin-Hyung, Han, Kyungdo, Park, Young-Gyu
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container_issue 11
container_start_page e0207508
container_title PloS one
container_volume 13
creator Lee, Seung-Hyun
Kim, Do-Hoon
Park, Joo-Hyun
Kim, Shinhye
Choi, Moonyoung
Kim, Hyonchong
Seul, Da Eun
Park, Soo Gyeong
Jung, Jin-Hyung
Han, Kyungdo
Park, Young-Gyu
description The objective of this study was to investigate the relationship between body mass index (BMI) and mortality in the elderly. This study was a nation-wide population-based retrospective cohort study of the National Health Insurance System-Senior Database (NHIS-SD). In this study, a total of 75,856 subjects were identified and selected from among 251,593 individuals aged ≥ 65 years who underwent health screening at least once between 2009 and 2012 and who had no history of diabetes, cardiovascular disease, stroke, cancer, or chronic obstructive pulmonary disease (COPD). The subjects of this study were followed-up until 2013 to identify the total mortality and the cause-specific mortality of 6 groups divided according to BMI. The hazard ratio (HR) by reference group (23 ≤ BMI < 25 kg/m2) of each group was calculated. A significant increase in the HR with a decreased BMI was observed in the group with a BMI < 23 kg/m2, whereas the HR in the group with a BMI ≥ 25 kg/m2 was not significantly different than that of the reference group (23 ≤ BMI < 25 kg/m2). This pattern was also seen in the subgroup analyses in relation to age, smoking history, alcohol use, exercise level, and socioeconomic status. In this study, we found that a low BMI was a risk factor for death in the elderly and that no significant difference in mortality was seen in the elderly with a BMI of 25 or over. In terms of an optimal BMI in the elderly, it is important to maintain an appropriately healthy range of BMI with the aim of preventing weight loss.
doi_str_mv 10.1371/journal.pone.0207508
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This pattern was also seen in the subgroup analyses in relation to age, smoking history, alcohol use, exercise level, and socioeconomic status. In this study, we found that a low BMI was a risk factor for death in the elderly and that no significant difference in mortality was seen in the elderly with a BMI of 25 or over. In terms of an optimal BMI in the elderly, it is important to maintain an appropriately healthy range of BMI with the aim of preventing weight loss.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>30444893</pmid><doi>10.1371/journal.pone.0207508</doi><orcidid>https://orcid.org/0000-0001-7421-4501</orcidid><oa>free_for_read</oa></addata></record>
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subjects Aged
Aged, 80 and over
Alcoholic beverages
Biology and Life Sciences
Body mass
Body Mass Index
Body size
Body weight loss
Cancer
Cardiovascular diseases
Chronic obstructive pulmonary disease
Cohort analysis
Databases, Factual
Diabetes mellitus
Female
Follow-Up Studies
Geriatrics
Health risk assessment
Humans
Lung cancer
Lung diseases
Male
Medicine and Health Sciences
Mortality
Obesity
Obstructive lung disease
Older people
People and Places
Population studies
Republic of Korea - epidemiology
Retrospective Studies
Risk analysis
Risk Factors
Smoking
Social Sciences
Socio-economic aspects
Socioeconomic factors
Socioeconomics
Stroke
Subgroups
Weight loss
title Association between body mass index and mortality in the Korean elderly: A nationwide cohort study
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