Evidence map›Paper›PMID 37491471›Full record

ReviewCommunications medicine2023

Quantification of race/ethnicity representation in Alzheimer's disease neuroimaging research in the USA: a systematic review.

Aaron C Lim, Lisa L Barnes, Gali H Weissberger, Melissa Lamar, Annie L Nguyen, Laura Fenton, Jennifer Herrera, S Duke Han

Abstract readReview
In one paragraph

Review in Communications medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing 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

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

  1. Pooled it
  2. BrainAGE, brain health, and mental disorders: A systematic review.Neuroscience and biobehavioral reviews · 2024
    Pooled it
  3. Engagement of understudied populations as community change: The South Texas ADRC model.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  4. Article
  5. Article
  6. Deep survival modeling to predict future cognitive impairment in unimpaired adults.The journals of gerontology. Series A, Biological sciences and medical sciences · 2026
    Article
  7. Observational
  8. The relationships between ethnoracial identity, Aβ positivity, APOEε4, and medial temporal lobe tau PET.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  9. APOE and plasma AD biomarkers: The role of genetic ancestry in Hispanics/Latinos.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Review
  20. Article
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

8 authors.

Aaron C LimDepartment of Family Medicine, Keck School of Medicine of USC, Alhambra, CA, USA.
Lisa L BarnesRush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA.
Gali H WeissbergerThe Interdisciplinary Department of Social Sciences, Bar-Ilan University, Raman Gat, Israel.ORCID http://orcid.org/0000-0002-3648-4866
Melissa LamarRush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA.
Annie L NguyenDepartment of Family Medicine, Keck School of Medicine of USC, Alhambra, CA, USA.
Laura FentonDepartment of Psychology, USC Dornsife College of Letters, Arts, and Sciences, Los Angeles, CA, USA.
Jennifer HerreraDepartment of Family Medicine, Keck School of Medicine of USC, Alhambra, CA, USA.
S Duke HanDepartment of Family Medicine, Keck School of Medicine of USC, Alhambra, CA, USA. duke.han@med.usc.edu.ORCID http://orcid.org/0000-0003-2453-9230

Funding

USCADRC Diversity Supplement PachicanoP30AG066530 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LON S SCHNEIDER · 2020 to 2026
$27.8M
RESEARCH TRAINING IN GERONTOLOGYT32AG000037 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI JENNIFER A AILSHIRE, EILEEN M CRIMMINS · 1985 to 2026
$13.2M
Culturally relevant contributors to cognitive and MRI changes in older LatinosR01AG062711 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI LAMAR, MELISSA · 2020 to 2025
$3.6M
MRI markers of brain aging and risk factors for cognitive decline in older African AmericansR01AG056405 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI BARNES, LISA L · 2018 to 2023
$3.6M
Racial Differences in Decision Making among Older AdultsR01AG055430 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI HAN, DUKE · 2017 to 2021
$3.3M
Finance, Cognition, and Default Network in Aging (FCDNA)RF1AG068166 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI HAN, DUKE · 2021 to 2021
$2.2M
Mid-Career Development and Mentoring on Financial Vulnerability and Alzheimer's DiseaseK24AG081325 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI DUKE HAN · 2023 to 2026
$798k
NIA NIH HHS K24 AG081325NIA NIH HHS P30 AG066530NIA NIH HHS R01 AG055430NIA NIH HHS R01 AG056405NIA NIH HHS R01 AG062711NIA NIH HHS RF1 AG068166NIA NIH HHS T32 AG000037
6 · The paper itself

Abstract

backgroundRacial and ethnic minoritized groups are disproportionately at risk for Alzheimer's Disease (AD), but are not sufficiently recruited in AD neuroimaging research in the United States. This is important as sample composition impacts generalizability of findings, biomarker cutoffs, and treatment effects. No studies have quantified the breadth of race/ethnicity representation in the AD literature.

methodsThis review identified median race/ethnicity composition of AD neuroimaging US-based research samples available as free full-text articles on PubMed. Two types of published studies were analyzed: studies that directly report race/ethnicity data (i.e., direct studies), and studies that do not report race/ethnicity but used data from a cohort study/database that does report this information (i.e., indirect studies).

resultsDirect studies (n = 719) have median representation of 88.9% white or 87.4% Non-Hispanic white, 7.3% Black/African American, and 3.4% Hispanic/Latino ethnicity, with 0% Asian American, Native Hawaiian/Pacific Islander, and American Indian/Alaska Native, Multiracial, and Other Race participants. Cohort studies/databases (n = 44) from which indirect studies (n = 1745) derived are more diverse, with median representation of 84.2% white, 83.7% Non-Hispanic white, 11.6% Black/African American, 4.7% Hispanic/Latino, and 1.75% Asian American participants. Notably, 94% of indirect studies derive from just 10 cohort studies/databases. Comparisons of two time periods using a median split for publication year, 1994-2017 and 2018-2022, indicate that sample diversity has improved recently, particularly for Black/African American participants (3.39% from 1994-2017 and 8.29% from 2018-2022).

conclusionsThere is still underrepresentation of all minoritized groups relative to Census data, especially for Hispanic/Latino and Asian American individuals. The AD neuroimaging literature will benefit from increased representative recruitment of ethnic/racial minorities. More transparent reporting of race/ethnicity data is needed.

Identifiers

PMID37491471
PMCPMC10368705

What OpenQuestion holds

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Registered trials

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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.