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Osteoporosis International

, Volume 29, Issue 9, pp 2011–2020 | Cite as

Nonlinear association between bone mineral density and all-cause mortality: the Dong-gu study

  • C. K. Choi
  • S. -S. Kweon
  • Y. -H. Lee
  • H. -S. Nam
  • K. -S. Park
  • S. -Y. Ryu
  • S. -W. Choi
  • S. A. Kim
  • M. -H. Shin
Original Article
  • 84 Downloads

Abstract

Summary

There was a U-shaped association between hip BMD and all-cause mortality, with the lowest mortality in the 90th percentile in males. However, there was an inverse linear relationship in females. In contrast, the association between lumbar spine BMD and mortality was less evident in males, with no association in females.

Introduction

Bone mineral density (BMD) is reported inversely associated with mortality. Although some previous studies provided evidence for nonlinear associations, these were not adequately assessed in most previous works.

Methods

We evaluated the nonlinear relationship between BMD and mortality in Asians. Our study involved 8629 participants in the Dong-gu study from 2007 to 2010. Cox proportional hazard regression was used to calculate hazard ratios (HRs) according to BMD categories after adjusting for potential confounders. During a follow-up of 6.7 ± 1.4 years, 712 participants died.

Results

There was a U-shaped association between hip BMD and all-cause mortality, with the lowest mortality in the 90th percentile in males. However, there was an inverse linear relationship in females. In males, compared with the 75th to 95th percentile group, the < 2.5th percentile group had a 3.89 (95% CI 2.41–6.28)-fold higher risk and the 2.5th to 5th percentile group had a 2.51 (95% CI 1.25–5.04)-fold higher risk. The HR was 2.51 (95% CI 1.25, 5.04) in the > 97.5th percentile group. In females, compared with that in the 75th to 95th percentile group, the HR was 2.33 (95% CI 1.24, 4.39) in the < 2.5th percentile group. In contrast, the association between lumbar spine BMD and mortality was less evident in males, with no association in females.

Conclusion

In conclusion, this study shows that the association between BMD and mortality varies by gender and that high and low BMD are predictors of all-cause mortality in males.

Keywords

Bone density Cohort studies Epidemiology Mortality Population surveillance 

Notes

Funding information

This study was supported by a grant (CRI13904-21) Chonnam National University Hospital Biomedical Research Institute.

Compliance with ethical standards

Conflicts of interest

None.

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2018

Authors and Affiliations

  • C. K. Choi
    • 1
  • S. -S. Kweon
    • 1
  • Y. -H. Lee
    • 2
  • H. -S. Nam
    • 3
  • K. -S. Park
    • 4
  • S. -Y. Ryu
    • 5
  • S. -W. Choi
    • 5
  • S. A. Kim
    • 1
  • M. -H. Shin
    • 1
  1. 1.Department of Preventive MedicineChonnam National University Medical SchoolGwangjuKorea
  2. 2.Department of Preventive Medicine & Institute of Wonkwang Medical ScienceWonkwang University College of MedicineIksanRepublic of Korea
  3. 3.Department of Preventive MedicineChungnam National University Medical SchoolDaejeonRepublic of Korea
  4. 4.Cardiocerebrovascular CenterMokpo Jung-Ang HospitalMokpoRepublic of Korea
  5. 5.Department of Preventive MedicineChosun University Medical SchoolGwangjuRepublic of Korea

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