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Prevalence and incidence of dementia among indigenous populations: a systematic review

Published online by Cambridge University Press:  19 June 2015

Laura A. Warren ,
Qiyun Shi ,
Kue Young ,
Amy Borenstein  and
Alexandra Martiniuk
Laura A. Warren*
Affiliation:
Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
Qiyun Shi
Affiliation:
Health and Rehabilitation Sciences, Western University, London, Ontario, Canada Stroke Outcomes Research Center, Department of Medicine, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
Kue Young
Affiliation:
Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada School of Public Health, University of Alberta, Edmonton, Alberta, Canada
Amy Borenstein
Affiliation:
Department of Epidemiology and Biostatistics, College of Public Health, University of South Florida, Tampa, Florida, USA
Alexandra Martiniuk
Affiliation:
George Institute for Global Health, Sydney, NSW, Australia University of Sydney, Faculty of Medicine, Sydney, NSW, Australia
*
Correspondence should be addressed to: Laura Warren, Dalla Lana School of Public Health, University of Toronto, 55 College Street, Toronto, ON, Canada. Phone: +1 647-236-6241. Email: [email protected].
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Abstract

Background:

Indigenous populations may be at increased risk, compared with majority populations, for the development of dementia due to lower education levels and socio-economic status, higher rates of diabetes, hypertension, cardiovascular disease and alcohol abuse, an aging population structure, and poorer overall health. This is the first systematic review investigating the prevalence and incidence of dementia in indigenous populations worldwide.

Methods:

This systematic review was conducted in accordance with PRISMA guidelines. We searched MEDLINE, Embase, and PsycInfo for relevant papers published up to April 2015. Studies were included if they reported prevalence or incidence, the disease typically occurred after the age of 45, the study population included indigenous people, and the study was conducted in the general population.

Results:

Fifteen studies representing five countries (Canada, Australia, the USA, Guam, Brazil) met the inclusion criteria. Dementia prevalence ranged from 0.5% to 20%. Retrospective studies relying on medical records for diagnoses had much lower prevalence rates and a higher risk of bias than population-based prospective studies performing their own diagnoses with culturally appropriate cognitive assessment methods.

Conclusions:

The prevalence of dementia among indigenous populations appears to be higher than it is for non-indigenous populations. Despite a building body of evidence supporting the need for dementia research among indigenous populations, there is a paucity of epidemiological research, none of which is of high quality.

Keywords

dementiaindigenousprevalenceincidenceglobal
Type
Review Article
Information
International Psychogeriatrics , Volume 27 , Issue 12 , December 2015 , pp. 1959 - 1970
Copyright
Copyright © International Psychogeriatric Association 2015 

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References

Australian Bureau of Statistics (2011). Estimates of Aboriginal and Torres Strait Islander Australians. Available at: http://www.abs.gov.au/ausstats/[email protected]/mf/3238.0.55.001; last accessed 5 April 2015.Google Scholar
Baloch, S., Moss, S. B., Nair, R. and Tingle, L. (2010). Practice patterns in the evaluation and management of dementia by primary care residents, primary care physicians, and geriatricians. Baylor University Medical Center Proceedings, 23, 121.CrossRefGoogle ScholarPubMed
Borenstein, A. et al. (2007). Cycad exposure and risk of dementia, MCI, and PDC in the Chamorro population of Guam. Neurology, 68, 1764–1771. doi:http://dx.doi.org/10.1212/01.wnl.0000262027.31623.b2.Google Scholar
British Columbia Provincial Health Officer (2009). Pathways to Health and Healing: 2nd Report on the Health and Well-being of Aboriginal People in British Columbia: Provincial Health Officer's Annual Report 2007. Victoria, B. C.: Ministry of Healthy Living and Sport Google Scholar
Brookmeyer, R., Johnson, E., Ziegler-Graham, K. and Arrighi, H. M. (2007). Forecasting the global burden of Alzheimer's disease. Alzheimer's & Dementia: The Journal of the Alzheimer's Association, 3, 186–191. doi:10.1016/j.jalz.2007.04.381.Google Scholar
Butler, R. et al. (2010). A novel PS1 gene mutation in a large Aboriginal kindred. Canadian Journal of Neurological Science, 37, 359–364.Google Scholar
Caixeta, L. and Reis, G. (2011). Dementia prevalence in indigenous population from Brazilian Amazon. Presented at the 15th Congress of the European Federation of Neurological Societies, European Journal of Neurology (pp. 344–620). Budapest, Hungary. Abstract onlyGoogle Scholar
Chen, H., Foo, S. H. and Ury, W. (2002). Recognizing dementia. Western Journal of Medicine, 176, 267.Google Scholar
Chen, J. H., Lin, K. P. and Chen, Y. C. (2009). Risk factors for dementia. Journal of the Formosan Medical Association, 108, 754–764. doi:10.1016/S0929-6646(09)60402-2.Google Scholar
Cummings, E., Maher, R., Showell, C. M. and Croft, T. (2011). Hospital coding of dementia: is it accurate? Health Information Management Journal, 40, 5.Google Scholar
Cunningham, J. and Paradies, Y. C. (2012). Socio-demographic factors and psychological distress in indigenous and non-indigenous Australian adults aged 18–64 years: analysis of national survey data. BMC Public Health, 12, 95.Google Scholar
Department of Health & Human Services (2007). A statistical profile of American Indian and Native Alaskan elderly. Available at: http://www.aoa.gov/Aging_Statistics/minority_aging/Facts-on-AINA-Elderly2008-plain_format.aspx; last accessed 26 September 2014.Google Scholar
Dingwall, K. M., Pinkerton, J. and Lindeman, M. A. (2013). “People like numbers”: a descriptive study of cognitive assessment methods in clinical practice for Aboriginal Australians in the Northern Territory. BMC Psychiatry, 13, 42. doi:10.1186/1471-244X-13-42.Google Scholar
Galasko, D. et al. (2007). Prevalence of dementia in Chamorros on Guam: relationship to age, gender, education, and APOE. Neurology, 68, 1772–1781.CrossRefGoogle ScholarPubMed
Government of Canada (2014). Population by sex and age group. Available at: http://www.statcan.gc.ca/tables-tableaux/sum-som/l01/cst01/demo10a-eng.htm; last accessed 22 December 2014.Google Scholar
Hatfield, C. F., Dudas, R. B. and Dening, T. (2009). Diagnostic tools for dementia. Maturitas, 63, 181–185. doi:10.1016/j.maturitas.2009.03.005.Google Scholar
Hendrie, H. C., Hall, K. S., Brittain, H. M. and Austrom, M. G. (1988). The CAMDEX: a standardized instrument for the diagnosis of mental disorder in the elderly: a replication with a US sample. Journal of the American Geriatrics Society, 36, 402.Google Scholar
Hendrie, H. C. et al. (1993). Alzheimer's disease is rare in Cree. International Psychogeriatrics IPA, 5, 5–14.Google Scholar
Higgins, J. P. and Green, S. (2011). Cochrane Handbook for Systematic Reviews of Interventions. Available at: http://handbook.cochrane.org; last accessed 10 December 2013.Google Scholar
Hoy, D. (2012). Assessing risk of bias in prevalence studies: modification of an existing tool and evidence of interrater agreement. Journal of Clinical Epidemiology, 65, 934–939.Google Scholar
Hulko, W., Camille, E., Antifeau, E., Arnouse, M., Bachynski, N. and Taylor, D. (2010). Views of first nation elders on memory loss and memory care in later life. Journal of Cross-Cultural Gerontology, 25, 317–342. doi:10.1007/s10823-010-9123-9.Google Scholar
International Work Group for Indigenous Affairs (2014). Indigenous people in Brazil. Available at: http://www.iwgia.org/regions/latin-america/brazil; last accessed 6 April 2015.Google Scholar
Jacklin, K. M., Walker, J. D. and Shawande, M. (2013). The emergence of dementia as a health concern among First Nations populations in Alberta, Canada. Canadian Journal of Public Health, 104, e39–44.Google Scholar
Jervis, L. L., Beals, J., Fickenscher, A. and Arciniegas, D. B. (2007). Performance on the Mini-Mental State Examination and Mattis Dementia Rating Scale among older American Indians. The Journal of Neuropsychiatry and Clinical Neurosciences, 19, 173–178. doi:10.1176/appi.neuropsych.19.2.173.CrossRefGoogle ScholarPubMed
Kelly, T., Yang, W., Chen, C. and Reynolds, K. (2008). Global burden of obesity in 2005 and projections to 2030. International Journal of Obesity, 32, 1431. doi:10.1038/ijo.2008.102.Google Scholar
Koski, L. (2013). Validity and applications of the Montreal cognitive assessment for the assessment of vascular cognitive impairment. Cerebrovascular Diseases, 36, 6.Google Scholar
Lindeman, M. A., Taylor, K. A., Kuipers, P., Stothers, K. and Piper, K. (2012). “We don't have anyone with dementia here”: a case for better intersectoral collaboration for remote indigenous clients with dementia. The Australian Journal of Rural Health, 20, 190–194. doi:10.1111/j.1440-1584.2012.01284.x.Google Scholar
Li, S. Q. et al. (2014). Dementia prevalence and incidence among the indigenous and non-indigenous populations of the Northern Territory. Journal of Australia, 465–469. doi:http://dx.doi.org/10.5694/mja13.11052.Google Scholar
LoGiudice, D. et al. (2011). The KICA Screen: the psychometric properties of a shortened version of the KICA (Kimberley Indigenous Cognitive Assessment). Australasian Journal on Ageing, 30, 215–219. doi:10.1111/j.1741-6612.2010.00486.x.Google Scholar
Mehta, K. M. et al. (2008). Race/ethnic differences in AD survival in US Alzheimer's Disease Centers. Neurology, 70, 1163–1170. doi:10.1212/01.wnl.0000285287.99923.3c.Google Scholar
Office of Minority Health and Health Equity (2015). CDC - American Indian Alaska Native Populations Racial Ethnic Minorities Minority Health. Available at: http://www.cdc.gov/minorityhealth/populations/REMP/aian.html; last accessed 23 March 2015.Google Scholar
Plato, C. C., Garruto, R. M., Galasko, D. and Craig, U. K. (2003). Amyotrophic lateral sclerosis and parkinsonism-dementia complex of Guam: changing incidence rates during the past 60 years. American Journal of Epidemiology, 157, 149.Google Scholar
Radford, K. et al. (2014). The Koori Growing old well study: investigating aging and dementia in urban Aboriginal Australians. International Psychogeriatrics, 26, 1033–1043. doi:http://dx.doi.org/10.1017/S1041610213002561.Google Scholar
Radford, K. et al. (2015). Prevalence of dementia in urban and regional aboriginal australians. Alzheimer's and Dementia, 11, 271–279. doi: 10.1016/j.jalz.2014.03.007.Google Scholar
Reed, D. M. and Brody, J. A. (1975). Amyotrophic lateral sclerosis and parkinsonism-dementia on Guam, 1945–1972. I. Descriptive epidemiology. American Journal of Epidemiology, 101, 287–301.Google Scholar
Reitz, C., Brayne, C. and Mayeux, R. (2011). Epidemiology of Alzheimer disease. Nature Reviews Neurology, 7, 137–152. doi:10.1038/nrneurol.2011.2.Google Scholar
Rose, L. L. (2010). When Chief Joel Abram learned of a proposed program to help First Nations people and families living with dementia, he saw the initiative as a way to fill a gap in sorely-needed support in his community. Available at: http://www.thestar.com/life/health_wellness/diseases_cures/2010/05/17/program_supports_first_nations_people_and_their_families_affected_by_dementia.html; last accessed 19 December 2013.Google Scholar
Smith, K. et al. (2008). High prevalence of dementia and cognitive impairment in indigenous Australians. Neurology, 71, 1470–1473. doi:10.1212/01.wnl.0000320508.11013.4f.Google Scholar
Smith, K. et al. (2010). Factors associated with dementia in Aboriginal Australians. Journal of Psychiatry, 44, 888–893. doi:http://dx.doi.org/10.3109/00048674.2010.491816.Google Scholar
Statistics Canada (2006). Aboriginal Peoples in Canada in 2006: Inuit, Métis, and First Nations, 2006 Census. Available at: http://www12.statcan.ca/census-recensement/2006/as-sa/97-558/pdf/97-558-XIE2006001.pdf; last accessed 19 December 2013.Google Scholar
Statistics Canada (2011). Aboriginal Peoples in Canada: First Nations People, Métis and Inuit. Available at: http://www12.statcan.gc.ca/nhs-enm/2011/as-sa/99-011-x/99-011-x2011001-eng.cfm; last accessed 19 December 2013.Google Scholar
Steele, J. C. (2005). Parkinsonism-dementia complex of Guam. Movement Disorders, 20, S99–S107. doi:10.1002/mds.20547.Google Scholar
Terracciano, L., Brozek, J., Compalati, E. and Schünemann, H. (2010). GRADE system: new paradigm. Current Opinion in Allergy and Clinical Immunology, 10, 377–383. doi:10.1097/ACI.0b013e32833c148b.Google Scholar
US Department of the Interior (2015). US Department of the Interior Indian Affairs. Available at: http://www.bia.gov/WhoWeAre/index.htm; last accessed 19 March 2015.Google Scholar
Waldram, J. B., Herring, A. and Young, T. K. (2006). Aboriginal Health in Canada: Historical, Cultural and Epidemiological Perspectives. Toronto: University of Toronto Press.Google Scholar
Waring, S. et al. (2004). Incidence of amyotrophic lateral sclerosis and of the parkinsonism-dementia complex of Guam, 1950–1989. Neuroepidemiology, 23, 192–200.Google Scholar
World Health Organization (2007). WHO Health of Indigenous Peoples. Available at: http://www.who.int/mediacentre/factsheets/fs326/en/; last accessed 28 September 2014.Google Scholar
Wu, Y. T., Matthews, F. E. and Brayne, C. (2014). Dementia: time trends and policy responses. Maturitas, 79, 191.Google Scholar
Zann, S. (1994). Identification of support, education and training needs of rural/remote health care service providers involved in dementia care (Rural Health, Support, Education, and Training (RHSET) Project Progress Report). Rural Health, Support, Education, and Training (RHSET), Queensland: Northern Regional Health Authority.Google Scholar
Zhang, Z. X., Anderson, D. W., Lavine, L. and Mantel, N. (1990). Patterns of acquiring parkinsonism-dementia complex on Guam. 1944 through 1985. Archives of Neurology, 47, 1019.Google Scholar