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Socioeconomic dependency and kidney transplantation accessibility and outcomes: a nationwide observational cohort study in South Korea

Authors
Park, SehoonPark, JinaKim, MyoungsukKim, Ji EunYu, Mi-YeonKim, KwangsooPark, MinsuKim, Yong ChulKim, Dong KiJoo, Kwon WookKim, Yon SuLee, Hajeong
Issue Date
Feb-2021
Publisher
SPRINGER HEIDELBERG
Keywords
Kidney transplantation; Disparity; Graft failure; Socioeconomic status
Citation
JOURNAL OF NEPHROLOGY, v.34, no.1, pp 211 - 219
Pages
9
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF NEPHROLOGY
Volume
34
Number
1
Start Page
211
End Page
219
URI
https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/33983
DOI
10.1007/s40620-020-00876-0
ISSN
1121-8428
1724-6059
Abstract
Background Socioeconomic status is an important determinant for patients' accessibility to, and prognosis of, kidney transplantation. However, the association between socioeconomic dependency and kidney transplantation accessibility or prognosis after kidney transplantation remains unclear. Methods In this nationwide cohort study, based on the claims database of South Korea, we included 12,889 kidney transplant recipients from 2007 to 2015 and stratified them according to health insurance categories that reflect socioeconomic dependency: workplace-independent (employed, N = 3257), workplace-dependent (dependent to the workplace-independent, N = 3661), community-representative (heads of the household but self-employed or unemployed, N = 2479), community-member (N = 1618), aided-representative (heads of household receiving medical aid from the government, N = 1580), and aided-member (N = 294). The incidence of kidney transplantation was calculated to evaluate its accessibility. The risk of graft failure was assessed using the Cox regression analysis, adjusted for clinicodemographic variables, including financial status. Results End-stage kidney disease patients who were employed (workplace-independent group) had the highest incidence proportion of kidney transplantation. The dependent groups' prognoses were worse than those of their independent counterparts [workplace-dependent versus workplace-independent, HR 1.26 (1.11-1.43) and community-dependent versus community-independent, HR 1.46 (1.23-1.74)], although no difference was observed between the aided subgroups [aided-dependent versus aided-independent, adjusted HR 1.16 (0.90-1.50)]. Conclusion Disparities in kidney transplantation accessibility were present in South Korea according to socioeconomic dependency; these differences may have an impact on prognosis.
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Kim, Ji Eun
Guro Hospital (Department of Nephrology and Hypertension, Guro Hospital)
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