Temporal Trends in Acute Coronary Syndrome Incidence in Aboriginal and Non-Aboriginal People in Western Australia
Authors' conclusion
Despite some evidence of declines in ACS incidence among Aboriginal groups, disparities with non-Aboriginal people persisted. Sustained Aboriginal-led efforts are needed to address underlying determinants and reduce the gap.
Study context
- Population
- Western Australian residents aged 25 to 84 years with incident acute coronary syndrome (ACS), 2003–20204,097 Aboriginal and 64,805 non-Aboriginal incident ACS cases
- Participants
- 4,097 vs 64,805
- Exposure
- Aboriginal-to-non-Aboriginal incidence rate ratios; pre-Closing the Gap (2003-2008) and post-Closing the Gap periods (2009-2016; 2017-2020)
- Aboriginaln = 4,097
- non-Aboriginaln = 64,805
- Outcome
- Annual percentage change in ACS incidence, Aboriginal
- Follow-up
- 2009 and 2016
Methodological detailslinked hospital and mortality data
- Linked hospital and mortality data
Main finding
As reported in the abstract
Older men
−4.9%/y
95% CI −8.9% to −0.7%
Younger women
−4.8%/y
95% CI −8.7% to −0.7%
Observational data: associations, not effects.
Further findings
Comorbidity prevalence
Diabetes
Chronic kidney disease
| Outcome | Risk ratios |
|---|---|
| Case fatality · across periods20% to 50% higher among Aboriginal across age-sex strata | 1.2-1.5 |
Incidence rate ratios, 2003 to 2008 and 2017 to 2020
- Men 25-54 years
- 5.2-5.6
- Men 55-84 years
- 2.9-2.1
- Women 25-54 years
- 10.3-10.0
- Women 55-84 years
- 2.9-3.6
- Limited changes
Annual at-risk population
- 2003
- 1 215 300
- 2020
- 1 765 564
Original publication
Temporal Trends in Acute Coronary Syndrome Incidence in Aboriginal and Non-Aboriginal People in Western Australia. Circ Popul Health Outcomes. Published 23 February 2026. doi:10.
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