Socio-economic status and incidence of renal replacement therapy

A registry study of Australian patients

Blair Grace, Philip Clayton, Alan Cass, Stephen McDonald

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Background: Socio-economic disadvantage has been linked to higher incidence of end-stage kidney disease in developed countries. Associations between socio-economic status (SES) and incidence of renal replacement therapy (RRT) have not been explored for different kidney diseases, genders or age groups in a country with universal access to healthcare.

Methods: We investigated the incidence of non-indigenous patients commencing RRT in Australia in 2000–09, using the Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry. Patient postcodes were grouped into deciles using a standard SES index. We analysed incidence by five groups of kidney diseases, age groups, gender and geographic remoteness.

Results: Incidence of RRT decreased with increasing area advantage. Differences were most evident for the most disadvantaged areas [markedly increased burden; incident rate ratio (IRR) 1.27; 95% confidence interval (CI) 1.18–1.38] and most advantaged decile (decreased burden, IRR 0.76; 95% CI 0.72–0.81), compared with decile 5. Patients with diabetic nephropathy showed the greatest disparities: residents of the most disadvantaged decile were 2.38 (95% CI 2.09–2.71) times more at risk than the most advantaged decile. Congenital and genetic kidney diseases showed lesser gradients—the most disadvantaged decile was 1.28 times (95% CI 0.98–1.68) more at risk. SES was not associated with incidence for patients older than 69 years.

Discussion: These SES gradients existed, despite all Australians having access to healthcare. Diseases associated with lifestyle show the greatest gradients with SES.
Original languageEnglish
Pages (from-to)4173-4180
Number of pages8
JournalNephrology Dialysis Transplantation
Volume27
Issue number11
DOIs
Publication statusPublished - Nov 2012

Fingerprint

Renal Replacement Therapy
Registries
Economics
Incidence
Kidney Diseases
Vulnerable Populations
Confidence Intervals
Age Groups
Delivery of Health Care
Inborn Genetic Diseases
Diabetic Nephropathies
New Zealand
Developed Countries
Chronic Kidney Failure
Life Style
Dialysis
Transplants

Cite this

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title = "Socio-economic status and incidence of renal replacement therapy: A registry study of Australian patients",
abstract = "Background: Socio-economic disadvantage has been linked to higher incidence of end-stage kidney disease in developed countries. Associations between socio-economic status (SES) and incidence of renal replacement therapy (RRT) have not been explored for different kidney diseases, genders or age groups in a country with universal access to healthcare.Methods: We investigated the incidence of non-indigenous patients commencing RRT in Australia in 2000–09, using the Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry. Patient postcodes were grouped into deciles using a standard SES index. We analysed incidence by five groups of kidney diseases, age groups, gender and geographic remoteness.Results: Incidence of RRT decreased with increasing area advantage. Differences were most evident for the most disadvantaged areas [markedly increased burden; incident rate ratio (IRR) 1.27; 95{\%} confidence interval (CI) 1.18–1.38] and most advantaged decile (decreased burden, IRR 0.76; 95{\%} CI 0.72–0.81), compared with decile 5. Patients with diabetic nephropathy showed the greatest disparities: residents of the most disadvantaged decile were 2.38 (95{\%} CI 2.09–2.71) times more at risk than the most advantaged decile. Congenital and genetic kidney diseases showed lesser gradients—the most disadvantaged decile was 1.28 times (95{\%} CI 0.98–1.68) more at risk. SES was not associated with incidence for patients older than 69 years.Discussion: These SES gradients existed, despite all Australians having access to healthcare. Diseases associated with lifestyle show the greatest gradients with SES.",
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Socio-economic status and incidence of renal replacement therapy : A registry study of Australian patients. / Grace, Blair; Clayton, Philip; Cass, Alan; McDonald, Stephen.

In: Nephrology Dialysis Transplantation, Vol. 27, No. 11, 11.2012, p. 4173-4180.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Socio-economic status and incidence of renal replacement therapy

T2 - A registry study of Australian patients

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AU - Clayton, Philip

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AU - McDonald, Stephen

PY - 2012/11

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N2 - Background: Socio-economic disadvantage has been linked to higher incidence of end-stage kidney disease in developed countries. Associations between socio-economic status (SES) and incidence of renal replacement therapy (RRT) have not been explored for different kidney diseases, genders or age groups in a country with universal access to healthcare.Methods: We investigated the incidence of non-indigenous patients commencing RRT in Australia in 2000–09, using the Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry. Patient postcodes were grouped into deciles using a standard SES index. We analysed incidence by five groups of kidney diseases, age groups, gender and geographic remoteness.Results: Incidence of RRT decreased with increasing area advantage. Differences were most evident for the most disadvantaged areas [markedly increased burden; incident rate ratio (IRR) 1.27; 95% confidence interval (CI) 1.18–1.38] and most advantaged decile (decreased burden, IRR 0.76; 95% CI 0.72–0.81), compared with decile 5. Patients with diabetic nephropathy showed the greatest disparities: residents of the most disadvantaged decile were 2.38 (95% CI 2.09–2.71) times more at risk than the most advantaged decile. Congenital and genetic kidney diseases showed lesser gradients—the most disadvantaged decile was 1.28 times (95% CI 0.98–1.68) more at risk. SES was not associated with incidence for patients older than 69 years.Discussion: These SES gradients existed, despite all Australians having access to healthcare. Diseases associated with lifestyle show the greatest gradients with SES.

AB - Background: Socio-economic disadvantage has been linked to higher incidence of end-stage kidney disease in developed countries. Associations between socio-economic status (SES) and incidence of renal replacement therapy (RRT) have not been explored for different kidney diseases, genders or age groups in a country with universal access to healthcare.Methods: We investigated the incidence of non-indigenous patients commencing RRT in Australia in 2000–09, using the Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry. Patient postcodes were grouped into deciles using a standard SES index. We analysed incidence by five groups of kidney diseases, age groups, gender and geographic remoteness.Results: Incidence of RRT decreased with increasing area advantage. Differences were most evident for the most disadvantaged areas [markedly increased burden; incident rate ratio (IRR) 1.27; 95% confidence interval (CI) 1.18–1.38] and most advantaged decile (decreased burden, IRR 0.76; 95% CI 0.72–0.81), compared with decile 5. Patients with diabetic nephropathy showed the greatest disparities: residents of the most disadvantaged decile were 2.38 (95% CI 2.09–2.71) times more at risk than the most advantaged decile. Congenital and genetic kidney diseases showed lesser gradients—the most disadvantaged decile was 1.28 times (95% CI 0.98–1.68) more at risk. SES was not associated with incidence for patients older than 69 years.Discussion: These SES gradients existed, despite all Australians having access to healthcare. Diseases associated with lifestyle show the greatest gradients with SES.

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JF - Nephrology Dialysis Transplantation

SN - 0931-0509

IS - 11

ER -