Evidence map›Paper›PMID 32264980›Full record

SynthesisPsychological medicine2021

Migration and dementia: a meta-analysis of epidemiological studies in Europe.

Jean-Paul Selten, Fabian Termorshuizen, Maarten van Sonsbeek, Jan Bogers, Ben Schmand

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Psychological medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Diversity in Alzheimer's disease drug trials: The importance of eligibility criteria.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2022
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  11. Social determinants of dementia: A scoping review.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Jean-Paul SeltenRivierduinen, Institute for Mental Health Care, Leiden, The Netherlands.ORCID 0000-0003-1591-3243
Fabian TermorshuizenRivierduinen, Institute for Mental Health Care, Leiden, The Netherlands.
Maarten van SonsbeekRivierduinen, Institute for Mental Health Care, Leiden, The Netherlands.
Jan BogersRivierduinen, Institute for Mental Health Care, Leiden, The Netherlands.
Ben SchmandDepartment of Psychology, University of Amsterdam, Amsterdam, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo provide an overview of epidemiological studies of dementia among migrant groups in Europe and to estimate their pooled odds ratio (OR) v. the reference population.

methodsSearch for articles reporting on incidence or prevalence of dementia among ethnic minorities and migrants in Europe, published before 21 December 2018. We performed several meta-analyses, using a random-effects model, and, when there was no evidence of heterogeneity, a fixed-effects model. We distinguished between all migrants, African-Europeans and Asian-Europeans.

resultsWe retrieved five population-based surveys and two health care record studies. The latter included one incidence study, the remainder were prevalence studies. The meta-analysis of all studies yielded a pooled OR, adjusted for age and sex, of 1.73 (95% CI 1.42-2.11) for dementia in all migrant groups. However, the pooled OR of population surveys (3.10; 95% CI 2.12-4.51) was significantly higher than that for the health care record studies (OR 0.94; 95% CI 0.80-1.11). The pooled ORs for African-Europeans and Asian-Europeans, based on population surveys, were 2.54 (95% CI 1.70-3.80) and 5.36 (95% CI 2.78-10.31), respectively.

conclusionsThe discrepancy between health care record studies and population surveys suggests that many migrants remain undiagnosed. Migrants from Asia and Africa seem to be at significantly increased risk of dementia in Europe. Since the prevalence rates in their countries of origin are generally not higher than those for natives in Europe, there may be a parallel with the epidemiology of schizophrenia.

Indexed as

Ethnic and Racial MinoritiesAfricaAsiaDementiaEuropeHumansIncidencePrevalenceTransients and MigrantsClaudin-5dementiaepidemiologyethnicitymigrationsocial exclusionsocial status

Identifiers

PMID32264980
PMCPMC8381287

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.