Evidence map›Paper›PMID 32986106›Full record

ArticleJAMA network open2020

Association of Sleep Electroencephalography-Based Brain Age Index With Dementia.

Elissa Ye, Haoqi Sun, Michael J Leone, Luis Paixao, Robert J Thomas, Alice D Lam, M Brandon Westover

Open access · goldAbstract read
In one paragraph

Article in JAMA network open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
3.1field-weighted citation impact, top 8% 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

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 57 citations in OpenAlex.

  1. Pooled it
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  9. When Age Is More Than a Number: Acceleration of Brain Aging in Neurodegenerative Diseases.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2025
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  12. [Research progress in electroencephalogram-based brain age prediction].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 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

7 authors at 2 institutions in 1 country.

Elissa YeDepartment of Neurology, Massachusetts General Hospital, Boston.
Haoqi SunDepartment of Neurology, Massachusetts General Hospital, Boston.
Michael J LeoneDepartment of Neurology, Massachusetts General Hospital, Boston.
Luis PaixaoDepartment of Neurology, Massachusetts General Hospital, Boston.
Robert J ThomasDivision of Pulmonary, Critical Care and Sleep, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
Alice D LamDepartment of Neurology, Massachusetts General Hospital, Boston.
M Brandon WestoverDepartment of Neurology, Massachusetts General Hospital, Boston.
Massachusetts General Hospital · USBeth Israel Deaconess Medical Center · US

Funding

Exploring the role of epileptiform activity in Alzheimer's DiseaseK23NS101037 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI LAM, ALICE D · 2018 to 2022
$1.0M
NINDS NIH HHS K23 NS101037
6 · The paper itself

Abstract

Importance: Dementia is an increasing cause of disability and loss of independence in the elderly population yet remains largely underdiagnosed. A biomarker for dementia that can identify individuals with or at risk for developing dementia may help close this diagnostic gap. Objective: To investigate the association between a sleep electroencephalography-based brain age index (BAI), the difference between chronological age and brain age estimated using the sleep electroencephalogram, and dementia. Design, Setting, and Participants: In this retrospective cross-sectional study of 9834 polysomnograms, BAI was computed among individuals with previously determined dementia, mild cognitive impairment (MCI), or cognitive symptoms but no diagnosis of MCI or dementia, and among healthy individuals without dementia from August 22, 2008, to June 4, 2018. Data were analyzed from November 15, 2018, to June 24, 2020. Exposure: Dementia, MCI, and dementia-related symptoms, such as cognitive change and memory impairment. Main Outcomes and Measures: The outcome measures were the trend in BAI when moving from groups ranging from healthy, to symptomatic, to MCI, to dementia and pairwise comparisons of BAI among these groups. Findings: A total of 5144 sleep studies were included in BAI examinations. Patients in these studies had a median (interquartile range) age of 54 (43-65) years, and 3026 (59%) were men. The patients included 88 with dementia, 44 with MCI, 1075 who were symptomatic, and 2336 without dementia. There was a monotonic increase in mean (SE) BAI from the nondementia group to the dementia group (nondementia: 0.20 [0.42]; symptomatic: 0.58 [0.41]; MCI: 1.65 [1.20]; dementia: 4.18 [1.02]; P < .001). Conclusions and Relevance: These findings suggest that a sleep-state electroencephalography-based BAI shows promise as a biomarker associated with progressive brain processes that ultimately result in dementia.

Indexed as

ElectroencephalographyAdultAgedAged, 80 and overAgingBrainCase-Control StudiesCognitive AgingCognitive DysfunctionCross-Sectional StudiesDementiaFemaleHumansMaleMental Status and Dementia TestsMiddle Aged

Identifiers

PMID32986106
PMCPMC7522697
OpenAlexW3088250370

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.