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Associations of Systolic Blood Pressure With Incident CKD G3-G5: A Cohort Study of South Korean Adults

Authors
 Tae Ik Chang  ;  Hyunsun Lim  ;  Cheol Ho Park  ;  Connie M Rhee  ;  Hamid Moradi  ;  Kamyar Kalantar-Zadeh  ;  Ea Wha Kang  ;  Shin-Wook Kang  ;  Seung Hyeok Han 
Citation
 AMERICAN JOURNAL OF KIDNEY DISEASES, Vol.76(2) : 224-232, 2020-08 
Journal Title
 AMERICAN JOURNAL OF KIDNEY DISEASES 
ISSN
 0272-6386 
Issue Date
2020-08
Abstract
Rationale & objective: Clinical practice guidelines recommend a target blood pressure (BP)<130/80 mm Hg to reduce cardiovascular risk. However, the optimal BP to prevent chronic kidney disease (CKD) is unknown. Study design: Population-based retrospective cohort study. Setting & participants: 10.5 million adults who participated in the National Health Insurance Service National Health Checkup Program in South Korea between 2009 and 2015 and had an estimated glomerular filtration rate (GFR) ≥ 60 mL/min/1.73 m2 at the beginning of follow-up. Predictors: Baseline and time-updated systolic BP (SBP) as a continuous variable and categorized as<110, 110 to 119, 120 to 129, 130 to 139, or≥140 mm Hg. Outcome: Incident CKD GFR categories 3 to 5 (CKD G3-G5), defined as de novo development of estimated GFR<60 mL/min/1.73 m2 for at least 2 consecutive assessments confirmed at least 90 days apart. Analytical approach: Cox proportional hazards regression for baseline BP and marginal structural analysis for time-updated BP. Results: During 49,169,311 person-years of follow-up, incident CKD G3-G5 developed in 172,423 (1.64%) individuals with a crude event rate of 3.51 (95% CI, 3.49-3.52) per 1,000 person-years. Compared to a baseline SBP of 120 to 129 mm Hg, HRs for incident CKD G3-G5 for the<110, 110 to 119, 130 to 139, and≥140 mm Hg categories were 0.84 (95% CI, 0.82-0.85), 0.92 (95% CI, 0.91-0.94), 1.11 (95% CI, 1.09-1.12), and 1.30 (95% CI, 1.28-1.31), respectively. For time-updated SBPs, corresponding HRs were 0.57 (95% CI, 0.56-0.59), 0.79 (95% CI, 0.78-0.80), 1.58 (95% CI, 1.55-1.60), and 2.49 (95% CI, 2.45-2.53), respectively. Treated as a continuous exposure, each 10-mm Hg higher SBP was associated with 35% higher risk for incident CKD G3-G5 (95% CI, 1.35-1.36). Limitations: Use of International Classification of Diseases codes to assess comorbid condition burden; residual confounding, and potential selection bias cannot be excluded. Conclusions: In this large national cohort study, higher SBPs were associated with higher risk for incident CKD G3-G5. These findings support evaluation of SBP-lowering strategies to reduce the development of CKD.
Full Text
https://www.sciencedirect.com/science/article/pii/S0272638620305497
DOI
10.1053/j.ajkd.2020.01.013
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Microbiology (미생물학교실) > 1. Journal Papers
Yonsei Authors
Kang, Shin Wook(강신욱) ORCID logo https://orcid.org/0000-0002-5677-4756
Park, Cheol Ho(박철호) ORCID logo https://orcid.org/0000-0003-4636-5745
Han, Seung Hyeok(한승혁) ORCID logo https://orcid.org/0000-0001-7923-5635
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/179713
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