Evidence map›Paper›PMID 33694298›Full record

ArticleAnnals of clinical and translational neurology2021

A population-based study of head injury, cognitive function and pathological markers.

Sarah-Naomi James, Jennifer M Nicholas, Christopher A Lane, Thomas D Parker, Kirsty Lu, Ashvini Keshavan, Sarah M Buchanan, Sarah E Keuss, Heidi Murray-Smith, Andrew Wong and 16 more

Abstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. 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

26 authors.

Sarah-Naomi JamesMRC Unit for Lifelong Health and Ageing at UCL, University College London, London, United Kingdom.ORCID 0000-0002-3800-4416
Jennifer M NicholasDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.ORCID 0000-0001-6023-0391
Christopher A LaneDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Thomas D ParkerDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Kirsty LuDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Ashvini KeshavanDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Sarah M BuchananDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Sarah E KeussDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Heidi Murray-SmithDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Andrew WongMRC Unit for Lifelong Health and Ageing at UCL, University College London, London, United Kingdom.
David M CashDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Ian B MaloneDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Josephine BarnesDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Carole H SudreMRC Unit for Lifelong Health and Ageing at UCL, University College London, London, United Kingdom.
William CoathDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Lloyd ProsserDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.ORCID 0000-0003-0299-1525
Sebastien OurselinSchool of Biomedical Engineering and Imaging Sciences, King's College London, Institute of Nuclear Medicine, University College London Hospitals, London, United Kingdom.
Marc ModatDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
David L ThomasDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Jorge CardosoSchool of Biomedical Engineering and Imaging Sciences, King's College London, Institute of Nuclear Medicine, University College London Hospitals, London, United Kingdom.
Amanda HeslegraveUK Dementia Research Institute at UCL, University College London, London, United Kingdom.
Henrik ZetterbergUK Dementia Research Institute at UCL, University College London, London, United Kingdom.
Sebastian J CrutchDementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Jonathan M Schott *Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Marcus Richards *MRC Unit for Lifelong Health and Ageing at UCL, University College London, London, United Kingdom.
Nick C Fox *Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.

Funding

ALTERNATIVE PATHWAYS OF T CELL ACTIVATIONK08AR002017 · NIAMS · VANDERBILT UNIVERSITY · PI BYRD, VICTOR M · 1998 to 2002
$348k
LMP POLYMORPHISMS IN B27-ASSOCIATED JUVENILE ARTHRITISK08AR002013 · NIAMS · CHILDREN'S HOSPITAL MED CTR (CINCINNATI) · PI COLBERT, ROBERT A. · 1997 to 2001
$238k
Alzheimer's Research UK ARUK-PG2014-1946Alzheimer's Research UK ARUK-PG2017-1946Alzheimer's Society UK ARUK-SRF2013-8Alzheimer's Society UK AS-JF-17-011Alzheimer's Society UK AS-PG-15-025Medical Research Council MC_UU_00019/3Medical Research Council MC_UU_00019/4Medical Research Council MC_UU_12019/1Medical Research Council MC_UU_12019/3Medical Research Council MR/J01107X/1Medical Research Council Dementias Platform UK CSUB19166Wellcome TrustWellcome Trust 200109/Z/15/Z
6 · The paper itself

Abstract

objectiveTo assess associations between head injury (HI) with loss of consciousness (LOC), ageing and markers of later-life cerebral pathology; and to explore whether those effects may help explain subtle cognitive deficits in dementia-free individuals.

methodsParticipants (n = 502, age = 69-71) from the 1946 British Birth Cohort underwent cognitive testing (subtests of Preclinical Alzheimer Cognitive Composite),

resultsCompared to those with no evidence of an LOC HI, only those reporting an LOC HI>15 years prior (16%, n = 80) performed worse on cognitive tests at age 69-71, taking into account premorbid cognition, particularly on the digit-symbol substitution test (DSST). Smaller brain volume (BV) and adverse NAWM microstructural integrity explained 30% and 16% of the relationship between HI and DSST, respectively. We found no evidence that LOC HI was associated with Aβ load, hippocampal volume, WMH volume, AD-related cortical thickness or NFL (all p > 0.01).

interpretationHaving a LOC HI aged 50's and younger was linked with lower later-life cognitive function at age ~70 than expected. This may reflect a damaging but small impact of HI; explained in part by smaller BV and different microstructure pathways but not via pathology related to AD (amyloid, hippocampal volume, AD cortical thickness) or ongoing neurodegeneration (serum NFL).

Indexed as

AgingCognitive DysfunctionCraniocerebral TraumaUnconsciousnessAgedCohort StudiesFemaleHumansMagnetic Resonance ImagingMalePositron-Emission Tomography

Identifiers

PMID33694298
PMCPMC8045921

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.