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KMID : 1102220240430020202
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Kidney Research and Clinical Practice
2024 Volume.43 No. 2 p.202 ~ p.215
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Risk of mortality and cause of death according to kidney function parameters: a nationwide observational study in Korea
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Jung Se-Hyun
Lee Soo-Jin
Kim Yae-Rim
Cho Se-Min
Huh Hyuk
Kim Yong-Chul
Han Seung-Seok
Lee Ha-Jeong
Lee Jung-Pyo
Joo Kwon-Wook
Lim Chun-Soo
Kim Yon-Su
Kim Dong-Ki
Han Kyung-Do
Park Se-Hoon
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Abstract
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Background: Further study is warranted to determine the association between estimated glomerular filtration rate (eGFR) or albuminuria and the risk of death from diverse causes.
Methods: We screened >10 million general health screening examinees who received health examinations conducted in 2009 using the claims database of Korea. After the exclusion of those previously diagnosed with renal failure and those with missing data, 9,917,838 individuals with available baseline kidney function measurements were included. The primary outcome was mortality and cause-specific death between 2009 and 2019 identified through death certificates based on the diagnostic codes of International Classification of Diseases, 10th revision. Multivariable Cox regression analysis adjusted for various clinicodemographic and social characteristics was used to assess mortality risk.
Results: The hazard ratio of death was significantly high in both the eGFR <60 mL/min/1.73 m2 and in the eGFR ≥120 mL/ min/1.73 m2 groups in univariable and multivariable regression analyses when compared to those within the reference range (eGFR of 90?120 mL/min/1.73 m2). The results were similar for death by cardiovascular, cancer, infection, endocrine, respiratory, and digestive causes. We also found that albuminuria was associated with higher risk of death regardless of eGFR range, and those in the higher categories of dipstick albuminuria showed higher risk.
Conclusion: We reconfirmed the significant association between eGFR, albuminuria, and mortality. Healthcare providers should keep in mind that albuminuria and decreased eGFR as well as kidney hyperfiltration are independent predictors of mortality.
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KEYWORD
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Albuminuria, Epidemiology, Glomerular filtration rate, Glomerular hyperfiltration, Kidney function test
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