Abstract
Background: Dementia is highly prevalent among Australia's First Nations peoples, including Torres Strait Islander and Aboriginal peoples in Far North Queensland (FNQ). It is likely that historically recent exposure to modifiable risk factors underlies these rates, and a large proportion of dementia may be potentially preventable. Methods: Data from two adult community health checks (2015–2018) were analyzed to determine the prevalence of 11 modifiable dementia risk factors among the First Nations residents of the Torres Strait and Northern Peninsula Area of FNQ. Population attributable fractions (PAF%) for dementia were calculated using age-standardized prevalence estimates derived from these health checks and relative risks obtained from previous meta-analyses in other populations. PAF% estimates were weighted for communality to account for overlap of risk factors. Findings: A third (34.9%) of the dementia burden in this population may be attributed to 11 potentially modifiable risk factors. Hypertension (6.3%), diabetes mellitus (6.0%), obesity (5.3%), and smoking (3.6%) were the highest contributing risk factors. The contribution of depression (1.3%) and alcohol (0.2%) was lower than other global and national estimates. While the adjusted PAF% for social isolation was low based on the adult community health check data (1.1%), it was higher (2.8%) when official census data were analyzed. Interpretation: These results suggest that a substantial proportion of dementia in FNQ First Nations peoples could potentially be prevented. Government investment in preventative health now is essential to reduce the future burden of dementia. Funding:National Health and Medical Research Council (NHMRC, GNT1107140, GNT1191144, GNT1106175, GNT0631947).
Original language | English |
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Article number | 100856 |
Pages (from-to) | 1-10 |
Number of pages | 10 |
Journal | The Lancet Regional Health - Western Pacific |
Volume | 37 |
DOIs |
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Publication status | Published - Aug 2023 |
Bibliographical note
Funding Information:The authors would like to acknowledge the traditional owners of the lands where this research was conducted and pay respects to the elders, past, present, and emerging. The authors wish to thank the residents of the Torres Strait and Northern Peninsula Area of Cape York, who participated in the two projects that underpinned this study. The authors also thank the staff at the primary health centers, without whom the study would never have been completed. Dr. Kathryn Meldrum provided valuable proof-editing assistance on the draft manuscript. This project was funded by grants from the Australian National Health and Medical Research Council (NHMRC). Fintan Thompson was supported by NHMRC Grants GNT1107140 and GNT1191144 . Funding for staff salaries for research fieldwork, travel, accommodation, expendables, and administration was provided by NHMRC Grants GNT1106175 and GNT0631947 . This funding body did not have a role in the study design, data collection, analysis, and interpretation of data, or in the writing of the manuscript, and in the decision to submit the manuscript for publication.
Publisher Copyright:
© 2023 The Author(s)