Association between body mass index and mortality in the Korean elderly

A nationwide cohort study

Seung Hyun Lee, Do-Hoon Kim, Joo Hyun Park, Shinhye Kim, Moonyoung Choi, Hyonchong Kim, Da Eun Seul, Soo Gyeong Park, Jin Hyung Jung, Kyungdo Han, Young Gyu Park

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)e0207508
JournalPLoS One
Volume13
Issue number11
DOIs
Publication statusPublished - 2018 Jan 1

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cohort studies
body mass index
Hazards
Body Mass Index
Cohort Studies
Mortality
History
Health insurance
Pulmonary diseases
Medical problems
Screening
Alcohols
Health
health insurance
National Health Programs
socioeconomic status
stroke
Social Class
respiratory tract diseases
Chronic Obstructive Pulmonary Disease

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

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

In: PLoS One, Vol. 13, No. 11, 01.01.2018, p. e0207508.

Research output: Contribution to journalArticle

Lee, SH, Kim, D-H, Park, JH, Kim, S, Choi, M, Kim, H, Seul, DE, Park, SG, Jung, JH, Han, K & Park, YG 2018, 'Association between body mass index and mortality in the Korean elderly: A nationwide cohort study', PLoS One, vol. 13, no. 11, pp. e0207508. https://doi.org/10.1371/journal.pone.0207508
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. / Association between body mass index and mortality in the Korean elderly : A nationwide cohort study. In: PLoS One. 2018 ; Vol. 13, No. 11. pp. e0207508.
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