ArticleBMJ open2022
Dementia prevalence estimation among the main ethnic groups in New Zealand: a population-based descriptive study of routinely collected health data.
Article in BMJ open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 25 citations in OpenAlex.
- Translational potential of medicinal plants for Alzheimer's disease: integrated evidence from molecular mechanisms to preclinical and clinical findings.Natural products and bioprospecting · 2026Review
- The Epidemiological Profile of Older Adults of Pacific Peoples Ethnicity in New Zealand Assessed for Home Support and Aged Residential Care.Australasian journal on ageing · 2026Article
- Plasma pTau181 is associated with subjective cognitive concerns but not objective cognitive decline or structural brain integrity measures in midlife.GeroScience · 2026Article
- Co-exploring how environments shape brain health through a planetary health lens: a photovoice study in Auckland, Aotearoa New Zealand.BMJ open · 2026Article
- Early Alzheimer's disease (mild cognitive impairment or mild dementia): Prevalence, diagnostics, treatment options, and guidelines in Asia, Australasia, and Pacific nations countries.The journal of prevention of Alzheimer's disease · 2025Review
- Social determinants of dementia: A scoping review.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025Article
- Cultural Adaptation of Cognitive Stimulation Therapy for Māori with Dementia (CST-Māori).Journal of cross-cultural gerontology · 2025Article
- Prevalence of Dementia in European, Chinese and Indian/Fijian-Indian Populations in Aotearoa New Zealand: A Protocol.International journal of geriatric psychiatry · 2025Article
- Gaps in biomedical research in frontotemporal dementia: A call for diversity and disparities focused research.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024Review
- Estimating the incidence of dementia in New Zealand: a cohort study applying capture-recapture modelling to routinely collected linked health datasets.The Lancet regional health. Western Pacific · 2024Article
- A scoping review of the unique landscape and challenges associated with dementia in the Western Pacific region.The Lancet regional health. Western Pacific · 2024Article
- Long-term impact of type 2 diabetes onset on dementia incidence rate among New Zealanders with impaired glucose tolerance: A tapered-matched landmark analysis over 25 years.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024Article
- Living with Dementia in Aotearoa (LiDiA): A Feasibility Study for a Dementia Prevalence Study in Māori and Non-Māori Living in New Zealand.Dementia (London, England) · 2024Article
- Dementia among Minority Populations: A Scoping Review of Meaning, Language, and Translation.Dementia and geriatric cognitive disorders · 2024Article
- Advancing dementia identification using machine learning and real-world sequential health data.Alzheimer's & dementia (Amsterdam, Netherlands)Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveEstimates of dementia prevalence in New Zealand (NZ) have previously been extrapolated from limited Australasian studies, which may be neither accurate nor reflect NZ's unique population and diverse ethnic groups. This study used routinely collected health data to estimate the 1-year period prevalence for diagnosed dementia for each of the 4 years between July 2016 and June 2020 in the age 60+ and age 80+ populations and for the four main ethnic groups.
designA population-based descriptive study.
settingSeven national health data sets within the NZ Integrated Data Infrastructure (IDI) were linked. Diagnosed dementia prevalence for each year was calculated using the IDI age 60+ and age 80+ populations as the denominator and also age-sex standardised to allow comparison across ethnic groups.
participantsDiagnosed dementia individuals in the health datasets were identified by diagnostic or medication codes used in each of the data sets with deduplication of those who appeared in more than one data set.
resultsThe crude diagnosed dementia prevalence was 3.8%-4.0% in the age 60+ population and 13.7%-14.4% in the age 80+ population across the four study years. Dementia prevalence age-sex standardised to the IDI population in the last study period of 2019-2020 was 5.4% for Māori, 6.3% for Pacific Islander, 3.7% for European and 3.4% for Asian in the age 60+ population, and 17.5% for Māori, 22.2% for Pacific Islander, 13.6% for European and 13.5% for Asian in the age 80+ population.
conclusionsThis study provides the best estimate to date for dementia prevalence in NZ but is limited to those people who were identified as having dementia based on data from the seven included data sets. The findings suggest that diagnosed dementia prevalence is higher in Māori and Pacific Islanders. A nationwide NZ community-based dementia prevalence study is much needed to confirm the findings of this study.
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