Evidence map›Paper›PMID 33627742›Full record

ArticleScientific reports2021

Interaction between cognitive reserve and age moderates effect of lesion load on stroke outcome.

Roza M Umarova, Lena V Schumacher, Charlotte S M Schmidt, Markus Martin, Karl Egger, Horst Urbach, Jürgen Hennig, Stefan Klöppel, Christoph P Kaller

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

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  17. A fronto-insular-parietal network for the sense of body ownership.Cerebral cortex (New York, N.Y. : 1991) · 2023
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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

9 authors at 2 institutions in 2 countries.

Roza M UmarovaFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany. roza.umarova@insel.ch.
Lena V SchumacherFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Charlotte S M SchmidtFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Markus MartinFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Karl EggerFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Horst UrbachFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Jürgen HennigFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Stefan KlöppelFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Christoph P KallerFaculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany. christoph.kaller@uniklinik-freiburg.de.
University of Freiburg · DEBernstein Center for Computational Neuroscience Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The concepts of brain reserve and cognitive reserve were recently suggested as valuable predictors of stroke outcome. To test this hypothesis, we used age, years of education and lesion size as clinically feasible coarse proxies of brain reserve, cognitive reserve, and the extent of stroke pathology correspondingly. Linear and logistic regression models were used to predict cognitive outcome (Montreal Cognitive Assessment) and stroke-induced impairment and disability (NIH Stroke Scale; modified Rankin Score) in a sample of 104 chronic stroke patients carefully controlled for potential confounds. Results revealed 46% of explained variance for cognitive outcome (p < 0.001) and yielded a significant three-way interaction: Larger lesions did not lead to cognitive impairment in younger patients with higher education, but did so in younger patients with lower education. Conversely, even small lesions led to poor cognitive outcome in older patients with lower education, but didn't in older patients with higher education. We observed comparable three-way interactions for clinical scores of stroke-induced impairment and disability both in the acute and chronic stroke phase. In line with the hypothesis, years of education conjointly with age moderated effects of lesion on stroke outcome. This non-additive effect of cognitive reserve suggests its post-stroke protective impact on stroke outcome.

Indexed as

Cognitive DysfunctionCognitive ReserveEducational StatusFemaleHumansMaleMental Status and Dementia TestsMiddle AgedNeuropsychological TestsSeverity of Illness IndexStroke

Identifiers

PMID33627742
PMCPMC7904829
OpenAlexW3130942027

What OpenQuestion holds

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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.