Evidence map›Paper›PMID 29508460›Full record

ArticleJournal of sleep research2019

Associations between quantitative sleep EEG and subsequent cognitive decline in older women.

Ina Djonlagic, Daniel Aeschbach, Stephanie Litwack Harrison, Dennis Dean, Kristine Yaffe, Sonia Ancoli-Israel, Katie Stone, Susan Redline

Open access · greenAbstract read
In one paragraph

Article in Journal of sleep research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 16% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. Comorbid insomnia and sleep apnea is associated with worse verbal episodic memory in older females.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Trial
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  6. Regulation of autophagy-mediated pathways by diet, physical activity, and sleep in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
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  8. Article
  9. Review
  10. Article
  11. Sleep Abnormalities and Risk of Alzheimer's Disease.Current neurology and neuroscience reports · 2025
    Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Exploring the Link Between Brain Waves and Sleep Patterns with Deep Learning Manifold Alignment.The 4th Joint International Conference on Deep Learning, Big Data and Blockchain (DBB 2023). Joint International Conference on Deep Learning, Big Data and Blockchain (4th : 2023 : Marrakech, Morocco ; Online) · 2023
    Article
  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 at 4 institutions in 2 countries.

Ina DjonlagicDivision of Sleep and Circadian Disorders, Brigham & Women's Hospital and Harvard Medical School, Boston, MA, USA.ORCID 0000-0002-6951-3862
Daniel AeschbachDivision of Sleep and Circadian Disorders, Brigham & Women's Hospital and Harvard Medical School, Boston, MA, USA.
Stephanie Litwack HarrisonCalifornia Pacific Medical Center Research Institute, San Francisco, CA, USA.
Dennis DeanDivision of Sleep and Circadian Disorders, Brigham & Women's Hospital and Harvard Medical School, Boston, MA, USA.
Kristine YaffeDepartments of Psychiatry, Neurology, and Epidemiology, University of California, San Francisco, CA, USA.
Sonia Ancoli-IsraelDepartment of Psychiatry, University of California, La Jolla, CA, USA.
Katie StoneCalifornia Pacific Medical Center Research Institute, San Francisco, CA, USA.
Susan RedlineDivision of Sleep and Circadian Disorders, Brigham & Women's Hospital and Harvard Medical School, Boston, MA, USA.
Brigham and Women's Hospital · USCalifornia Pacific Medical Center · USSan Francisco VA Medical Center · USUniversity of California San Diego · US

Funding

Study of Osteoporotic FracturesR01AG005407 · NIA · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI CUMMINGS, STEVEN RON, YAFFE, KRISTINE · 1986 to 2016
$23.2M
Changes in Sleep and Cognition in Older WomenR01AG026720 · NIA · CALIFORNIA PACIFIC MED CTR RES INSTITUTE · PI STONE, KATIE L, YAFFE, KRISTINE · 2006 to 2016
$7.5M
Study of Osteoporotic FracturesR01AG005394 · NIA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI ENSRUD, KRISTINE · 1986 to 2015
$6.1M
Sex Hormones, Related Polymorphisms &Cognitive DeclineR01AG021918 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI YAFFE, KRISTINE · 2003 to 2006
$1.1M
Predictors of sleep-dependent Memory Consolidation in Obstructive Sleep ApneaK23HL103850 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI DJONLAGIC, INA E · 2010 to 2014
$820k
NHLBI NIH HHS K23 HL103850NIA NIH HHS R01 AG005394NIA NIH HHS R01 AG005407NIA NIH HHS R01 AG021918NIA NIH HHS R01 AG026720
6 · The paper itself

Abstract

The pathophysiological processes of Alzheimer's dementia predate its clinical manifestation. Sleep disturbances can accelerate the aging process and are common features of dementia. This study examined whether quantitative sleep electroencephalogram changes predate the clinical development of mild cognitive impairment and/or incident dementia. We collected data from a nested case-control sample of women (mean age 83 years) from the Sleep and Cognition Study, an ancillary study to the longitudinal Study of Osteoporotic Fractures, who were characterized as cognitively normal at the time of a baseline polysomnography study (Study of Osteoporotic Fractures visit 8) based on a Mini-Mental Status Exam (MMSE) score >24. Cases (n = 85) were women who developed new mild cognitive impairment or dementia by objective cognitive testing 5 years after polysomnography. Controls were women with no mild cognitive impairment/dementia (n = 85) at baseline or at follow-up. Differences in electroencephalogram absolute and relative power density were observed between the two groups. Specifically, higher electroencephalogram power values were found in the dementia/mild cognitive impairment group, for the alpha (p = .01) and theta bands (p = .04) in non-rapid eye movement sleep, as well as alpha (p = .04) and sigma (p = .04) bands in rapid eye movement sleep. In contrast, there were no group differences in traditional polysomnography measures of sleep architecture and sleep stage distribution, as well as sleep apnea and periodic limb movement indices. Our results provide evidence for quantitative electroencephalogram changes, which precede the clinical onset of cognitive decline and the diagnosis of dementia in elderly women, and support the application of quantitative sleep electroencephalogram analysis as a promising biomarker for imminent cognitive decline.

Indexed as

Aged, 80 and overAlzheimer DiseaseCognition DisordersCognitive DysfunctionElectroencephalographyFemaleHumansLongitudinal StudiesPolysomnographySleepSleep Wake Disordersaginglongitudinal analysismemory

Identifiers

PMID29508460
PMCPMC7025429
OpenAlexW2790232098

What OpenQuestion holds

Textmetadata
LicenceTDM
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.