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KMID : 1102220210400020272
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Kidney Research and Clinical Practice
2021 Volume.40 No. 2 p.272 ~ p.281
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Effects of residential greenness on clinical outcomes of patients with chronic kidney disease: a large-scale observation study
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Park Jae-Yoon
Jung Ji-Yun
Kim Yong-Chul
Lee Hye-Won
Kim E-Jin
Kim Yon-Su
Kim Ho
Lee Jung-Pyo
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Abstract
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Background: As industrialization and urbanization are accelerating, the distribution of green areas is decreasing, particularly in developing countries. Since the 2000s, the effects of surrounding greenness on self-perceived health, including physical and mental health, longevity, and obesity have been reported. However, the effects of surrounding green space on chronic kidney disease are not well understood. Therefore, we investigated the impact of residential greenness on the mortality of chronic kidney disease patients and progression from chronic kidney disease to end-stage renal disease (ESRD).
Methods: Using a large-scale observational study, we recruited chronic kidney disease patients (n = 64,565; mean age, 54.0 years; 49.0% of male) who visited three Korean medical centers between January 2001 and December 2016. We investigated the hazard ratios of clinical outcomes per 0.1-point increment of exposure to greenness using various models.
Results: During the mean follow-up of 6.8 ± 4.6 years, 5,512 chronic kidney disease patients developed ESRD (8.5%) and 8,543 died (13.2%). In addition, a 0.1-point increase in greenness reduced all-cause mortality risk in chronic kidney disease and ESRD patients and progression of chronic kidney disease to ESRD in a fully adjusted model. The association between mortality in ESRD patients and the normalized difference vegetation index was negatively correlated in people aged >65 years, who had normal weight, were nonsmokers, and lived in a nonmetropolitan area.
Conclusion: Chronic kidney disease patients who live in areas with higher levels of greenness are at reduced risk of all-cause mortality and progression to ESRD.
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KEYWORD
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Chronic kidney disease, End-stage renal disease, Normalized difference vegetation index, Residential greenness
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