Evidence map›Paper›PMID 33527720›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2021

Generalizability of findings from a clinical sample to a community-based sample: A comparison of ADNI and ARIC.

Kan Z Gianattasio, Erin E Bennett, Jingkai Wei, Megha L Mehrotra, Thomas Mosley, Rebecca F Gottesman, Dean F Wong, Elizabeth A Stuart, Michael E Griswold, David Couper and 3 more

Open access · greenAbstract readComparative Study
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
4.7field-weighted citation impact, top 4% of its field
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

41 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. A multimodal model for clinically defined MCI integrating plasma biomarkers and brain microstructural features: a dual-cohort external validation study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Response to "Brain Amyloid and Cognitive Decline in Late-Life Depression".The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry · 2026
    Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. The role of genomic-informed risk assessments in predicting dementia outcomes.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  13. Article
  14. Article
  15. The Role of Genomic-Informed Risk Assessments in Predicting Dementia Outcomes.medRxiv : the preprint server for health sciences · 2025
    Article
  16. Pathways to Racial/Ethnic Inequalities in Dementia.Annual review of clinical psychology · 2025
    Review
  17. Article
  18. Observational
  19. Review
  20. Racial, Ethnic, and Geographic Diversity in Population Neuroscience.Current topics in behavioral neurosciences · 2024
    Review
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

13 authors at 8 institutions in 1 country.

Kan Z GianattasioDepartment of Epidemiology, George Washington University, Washington, District of Columbia, USA.ORCID 0000-0002-8665-2856
Erin E BennettDepartment of Epidemiology, George Washington University, Washington, District of Columbia, USA.
Jingkai WeiDepartment of Epidemiology, George Washington University, Washington, District of Columbia, USA.
Megha L MehrotraDepartment of Epidemiology & Biostatistics, University of California San Francisco, San Francisco, California, USA.
Thomas MosleyDepartment of Neurology, University of Mississippi Medical Center, Jackson, Mississippi, USA.
Rebecca F GottesmanDepartments of Neurology and Epidemiology, Johns Hopkins University, Baltimore, Maryland, USA.
Dean F WongMallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, Missouri, USA.
Elizabeth A StuartDepartment of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
Michael E GriswoldDepartment of Biostatistics, University of Mississippi Medical Center, Jackson, Mississippi, USA.
David CouperDepartment of Biostatistics, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA.
M Maria GlymourDepartment of Epidemiology & Biostatistics, University of California San Francisco, San Francisco, California, USA.
Melinda C PowerDepartment of Epidemiology, George Washington University, Washington, District of Columbia, USA.
Alzheimer's Disease Neuroimaging Initiative
George Washington University · USJohns Hopkins University · USUniversity of California, San Francisco · USAlzheimer’s Disease Neuroimaging Initiative · USJackson Memorial Hospital · USUniversity of Mississippi Medical Center · USUniversity of North Carolina at Chapel Hill · USWashington University in St. Louis · US

Funding

Alzheimer's Disease Neuroimaging Initiative - SupplementU01AG024904 · NIA · NORTHERN CALIFORNIA INSTITUTE RES &EDUC · PI WEINER, MICHAEL W · 2004 to 2015
$121.0M
ARIC Neurocognitive Study (ARIC-NCS) Renewal 2023-2028U01HL096812 · NHLBI · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI JOSEF CORESH, THOMAS H MOSLEY · 2010 to 2026
$65.7M
ARIC Neurocognitive Study (ARIC-NCS) Renewal 2 of 5U01HL096917 · NHLBI · UNIVERSITY OF MISSISSIPPI MED CTR · PI MOSLEY, THOMAS H · 2010 to 2018
$11.9M
ARIC Neurocognitive Study (ARIC-NCS) Renewal UNC 4 of 5U01HL096899 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI COUPER, DAVID J · 2010 to 2018
$7.5M
ARIC Neurocognitive Study (ARIC-NCS)U01HL096902 · NHLBI · UNIVERSITY OF MINNESOTA · PI LUTSEY, PAMELA L. · 2010 to 2018
$7.4M
The ARIC-PET Amyloid Imaging StudyR01AG040282 · NIA · JOHNS HOPKINS UNIVERSITY · PI CORESH, JOSEF, SPIRA, ADAM PETER · 2011 to 2021
$7.1M
ARIC Neurocognitive Study (ARIC-NCS) Renewal 4 of 5U01HL096814 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI HUGHES, TIMOTHY M., WAGENKNECHT, LYNNE E · 2010 to 2018
$6.5M
The ARIC and Neurocognitive Longitudinal StudyR01HL070825 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI MOSLEY, THOMAS H · 2002 to 2004
$5.1M
Closing the gap between observational research and randomized trials for prevention of Alzheimer's Disease and dementiaR01AG057869 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GRAFF, REBECCA ELIZABETH, POWER, MELINDA C · 2018 to 2022
$3.9M
NHLBI NIH HHS HHSN268201700001CNHLBI NIH HHS HHSN268201700001INHLBI NIH HHS HHSN268201700002CNHLBI NIH HHS HHSN268201700002INHLBI NIH HHS HHSN268201700003CNHLBI NIH HHS HHSN268201700003INHLBI NIH HHS HHSN268201700004CNHLBI NIH HHS HHSN268201700004INHLBI NIH HHS HHSN268201700005CNHLBI NIH HHS HHSN268201700005INHLBI NIH HHS R01 HL070825NHLBI NIH HHS U01 HL096812NHLBI NIH HHS U01 HL096814NHLBI NIH HHS U01 HL096899NHLBI NIH HHS U01 HL096902NHLBI NIH HHS U01 HL096917NIA NIH HHS R01 AG040282NIA NIH HHS R01 AG057869NIA NIH HHS U01 AG024904
6 · The paper itself

Abstract

introductionClinic-based study samples, including the Alzheimer's Disease Neuroimaging Initiative (ADNI), offer rich data, but findings may not generalize to community-based settings. We compared associations in ADNI to those in the Atherosclerosis Risk in Communities (ARIC) study to assess generalizability across the two settings.

methodsWe estimated cohort-specific associations among risk factors, cognitive test scores, and neuroimaging outcomes to identify and quantify the extent of significant and substantively meaningful differences in associations between cohorts. We explored whether using more homogenous samples improved comparability in effect estimates.

resultsThe proportion of associations that differed significantly between cohorts ranged from 27% to 34% across sample subsets. Many differences were substantively meaningful (e.g., odds ratios [OR] for apolipoprotein E ε4 on amyloid positivity in ARIC: OR = 2.8, in ADNI: OR = 8.6). DISCUSSION: A higher proportion of associations differed significantly and substantively than would be expected by chance. Findings in clinical samples should be confirmed in more representative samples.

Indexed as

Alzheimer DiseaseAtherosclerosisCohort StudiesNeuroimagingPublic HealthAgedApolipoprotein E4FemaleHumansMagnetic Resonance ImagingMaleMiddle AgedNeuropsychological TestsOutcome Assessment, Health CarePositron-Emission TomographyRisk FactorsApolipoprotein E4Alzheimer's diseaseAlzheimer's Disease Neuroimaging InitiativeAtherosclerosis Risk in Communitiesdementiageneralizability

Identifiers

PMID33527720
PMCPMC8359773
OpenAlexW3126550391

What OpenQuestion holds

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Registered trials

None linked

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.