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Dawson LP, Burchill L, O'Brien J, Dinh D, Duffy SJ, Stub D, Brennan A, Clark D, Oqueli E, Hiew C, Freeman M, Reid CM, Ajani AE. Differences in outcome of percutaneous coronary intervention between Indigenous and non-Indigenous people in Victoria, Australia: a multicentre, prospective, observational, cohort study. LANCET GLOBAL HEALTH 2021; 9:e1296-e1304. [PMID: 34274040 DOI: 10.1016/s2214-109x(21)00224-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 05/02/2021] [Accepted: 05/05/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Data on the patient characteristics and health outcomes of Indigenous Australians having revascularisation for treatment of coronary artery disease are scarce. The aim of this study was to assess differences in patient characteristics, presentations, and outcomes among Indigenous and non-Indigenous Australians having percutaneous coronary intervention (PCI) in urban and larger regional centres in Victoria, Australia. METHODS In this multicentre, prospective, observational cohort study, data were prospectively collected from six government-funded tertiary hospitals in the state of Victoria, Australia. The Melbourne Interventional Group PCI registry was used to identify patients having PCI at Victorian metropolitan and large regional hospitals between Jan 1, 2005, and Dec 31, 2018. The primary outcome was long-term mortality. Secondary outcomes were 30 day mortality and 30 day major adverse cardiovascular events (MACE), defined as a composite endpoint of death, myocardial infarction, and target-vessel revascularisation. Regression analyses, adjusted for clinically relevant covariates and geographical and socioeconomic indices, were used to establish the influence of Indigenous status on these study outcomes. FINDINGS 41 146 patient procedures were entered into the registry, of whom 179 (0·4%) were recorded as identifying as Indigenous Australian, 39 855 (96·9%) were not Indigenous Australian, and 1112 (2·7%) had incomplete data regarding ethnicity and were excluded. Compared with their non-Indigenous counterparts, Indigenous patients were younger, more often women, and more likely to have comorbidities. Indigenous Australians were also more likely to live in a regional community and areas of socioeconomic disadvantage. Procedural success and complication rates were similar for Indigenous and non-Indigenous patients having PCI. At 30 day follow-up, Indigenous Australians were more likely to be taking optimal medical therapy, although overall follow-up rates were lower and prevalence of persistent smoking was higher. Multivariable analysis showed that Indigenous status was independently associated with increased risk of long-term mortality (hazard ratio 2·49, 95% CI 1·79-3·48; p<0·0001), 30 day mortality (odds ratio 2·78, 95% CI 1·09-7·12; p=0·033), and 30-day MACE (odds ratio 1·87, 95% CI 1·03-3·39; p=0·039). INTERPRETATION Indigenous Australians having PCI in urban and larger regional centres are at increased risk of mortality and adverse cardiac events. Clinically effective and culturally safe care pathways are urgently needed to improve health outcomes among Indigenous Australians who are having PCI. FUNDING National Health and Medical Research Council, National Heart Foundation.
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Affiliation(s)
- Luke P Dawson
- Department of Cardiology, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Luke Burchill
- Department of Cardiology, Royal Melbourne Hospital, Melbourne, VIC, Australia; Department of Medicine, Melbourne University, Melbourne, VIC, Australia
| | - Jessica O'Brien
- Department of Cardiology, The Alfred Hospital, Melbourne, VIC, Australia
| | - Diem Dinh
- Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, VIC, Australia
| | - Stephen J Duffy
- Department of Cardiology, The Alfred Hospital, Melbourne, VIC, Australia; Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, VIC, Australia; Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Dion Stub
- Department of Cardiology, The Alfred Hospital, Melbourne, VIC, Australia; Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, VIC, Australia; Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Angela Brennan
- Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, VIC, Australia
| | - David Clark
- Department of Cardiology, Austin Health, Melbourne, VIC, Australia
| | - Ernesto Oqueli
- Department of Cardiology, Ballarat Health Services, Ballarat, VIC, Australia; School of Medicine, Faculty of Health, Deakin University, Geelong, VIC, Australia
| | - Chin Hiew
- Department of Cardiology, University Hospital, Geelong, VIC, Australia
| | - Melanie Freeman
- Department of Cardiology, Box Hill Hospital, Melbourne, VIC, Australia
| | - Christopher M Reid
- Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, VIC, Australia; Centre of Clinical Research and Education, School of Public Health, Curtin University, Perth, WA, Australia
| | - Andrew E Ajani
- Department of Cardiology, Royal Melbourne Hospital, Melbourne, VIC, Australia; Department of Medicine, Melbourne University, Melbourne, VIC, Australia; Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, VIC, Australia.
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Kearns T, Diaz A, Whop LJ, Moore SP, Condon JR, Andrews RM, Katzenellenbogen JM, Matthews V, Wang W, Johnston T, Taylor C, Potts B, Kathage A, Suleman A, Stanley L, Mitchell L, Garvey G, Williamson D. Investigating inequities in cardiovascular care and outcomes for Queensland Aboriginal and Torres Strait Islander people: protocol for a hospital-based retrospective cohort data linkage project. BMJ Open 2021; 11:e043304. [PMID: 33741666 PMCID: PMC7986649 DOI: 10.1136/bmjopen-2020-043304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Cardiovascular disease (CVD) represents a significant burden of disease for Aboriginal and Torres Strait Islander people, a population that continues to experience a lower life expectancy than other Australians. The aim of the Better Cardiac Care Data Linkage project is to describe patient care pathways and to identify disparities in care and health outcomes between Aboriginal and Torres Strait Islander people and other Queensland residents diagnosed with CVD in the state of Queensland. METHODS This is a population-based retrospective cohort study using linked regional, state and national health and administrative data collections to describe disparities in CVD healthcare in primary and secondary prevention settings and during hospitalisation. The CVD cohort will be identified from the Queensland Hospital Admitted Patient Data Collection for admissions that occurred between 1 July 2010 and 31 June 2016 and will include relevant International Classification of Disease codes for ischaemic heart disease, congestive heart failure, stroke, acute rheumatic fever and rheumatic heart disease. Person-level data will be linked by Data Linkage Queensland and the Australian Institute of Health and Welfare (AIHW) in accordance with ethical and public health approvals to describe the patient journey prior to, during and post the hospital admission. ANALYSIS This project will focus largely on descriptive epidemiological measures and multivariate analysis of clinical care standards and outcomes for Aboriginal and Torres Strait Islander people compared with other Queenslanders, including identification of risk factors for suboptimal care and change over time. Variation in care pathways and patient outcomes will be compared by Indigenous status, sex, age group, remoteness of residence, year of index hospitalisation and socioeconomic status. Cox models for time-to-event data and mixed models or generalised estimating equations for longitudinal data will be used to measure change over time where temporal effects exist. ETHICS AND DISSEMINATION Ethical approval has been granted by Human Research Ethics Committees of the Prince Charles Hospital (HREC/15/QPCH/289) and the AIHW (EO2016-1-233). The Northern Territory Department of Health and Menzies School of Health Research have also provided reciprocal ethical approval of the project (HREC 2019-3490). The deidentified results will be summarised in a report and shared with investigators, advisory groups, Queensland Health and key stakeholders. Findings will be disseminated through workshops, conferences and will be published in peer-reviewed journals.
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Affiliation(s)
- Therese Kearns
- Menzies School of Health Research, Charles Darwin University, Casuarina, Northern Territory, Australia
| | - Abbey Diaz
- Menzies School of Health Research, Charles Darwin University, Casuarina, Northern Territory, Australia
| | - Lisa J Whop
- College of Health and Medicine, National Centre for Epidemiology and Population Health, Canberra, Australian Capital Territory, Australia
| | - Suzanne P Moore
- College of Nursing and Midwifery, Charles Darwin University, Brisbane, Queensland, Australia
| | - John R Condon
- Menzies School of Health Research, Charles Darwin University, Melbourne, Victoria, Australia
| | - Ross M Andrews
- Menzies School of Health Research, Charles Darwin University, Brisbane, Queensland, Australia
| | - Judith M Katzenellenbogen
- School of Population and Global Health, University of Western Australia, Crawley, Western Australia, Australia
| | - Veronica Matthews
- University Centre for Rural Health, North Coast, The University of Sydney, Lismore, New South Wales, Australia
| | - William Wang
- Faculty of Medicine, University of Queensland, Woolloongabba, Queensland, Australia
- Cardiology, Princess Alexandra Hospital Health Service District, Woolloongabba, Queensland, Australia
| | - Trisha Johnston
- Data Linkage Queensland, Queensland Health, Brisbane, Queensland, Australia
| | - Catherine Taylor
- Queensland Record Linkage Group, Queensland Health, Brisbane, Queensland, Australia
| | - Boyd Potts
- Menzies School of Health Research, Charles Darwin University, Casuarina, Northern Territory, Australia
| | - Alex Kathage
- Aboriginal and Torres Strait Islander Health Division, Queensland Health, Brisbane, Queensland, Australia
| | - Abdulla Suleman
- Aboriginal and Torres Strait Islander Health Division, Queensland Health, Brisbane, Queensland, Australia
| | - Lucy Stanley
- Aboriginal and Torres Strait Islander Health Division, Queensland Health, Brisbane, Queensland, Australia
| | - Louise Mitchell
- Aboriginal and Torres Strait Islander Health Division, Queensland Health, Brisbane, Queensland, Australia
| | - Gail Garvey
- Wellbeing and Preventable Chronic Disease Division, Menzies School of Health Research, Brisbane, Queensland, Australia
| | - Daniel Williamson
- Aboriginal and Torres Strait Islander Health Division, Queensland Health, Brisbane, Queensland, Australia
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