Evidence map›Paper›PMID 32107272›Full record

SynthesisJournal of neurology, neurosurgery, and psychiatry2020

Concussion and long-term cognitive impairment among professional or elite sport-persons: a systematic review.

Valentina Gallo, Kim Motley, Simon P T Kemp, Saba Mian, Tara Patel, Laura James, Neil Pearce, Damien McElvenny

Abstract readSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Journal of neurology, neurosurgery, and psychiatry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
–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

28 citing papers in PubMed.

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  20. Concussion and long-term cognitive function among rugby players-The BRAIN Study.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2022
    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.

Valentina Gallo *Institute of Population Health Sciences, Queen Mary, University of London, London, UK v.gallo@qmul.ac.uk.ORCID 0000-0002-1268-8629
Kim Motley *School of Medicine and Dentistry, Queen Mary University of London, London, UK.
Simon P T KempDepartment of Medical Statistics, London School of Hygiene and Tropical, London, UK.
Saba MianDepartment of Medical Statistics, London School of Hygiene and Tropical, London, UK.
Tara PatelInstitute of Population Health Sciences, Queen Mary, University of London, London, UK.
Laura JamesInstitute of Population Health Sciences, Queen Mary, University of London, London, UK.
Neil PearceDepartment of Medical Statistics, London School of Hygiene and Tropical, London, UK.
Damien McElvennyDepartment of Medical Statistics, London School of Hygiene and Tropical, London, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionUnderstanding whether concussion in sport is associated with worsening cognitive function in later life will likely have immediate repercussion on sports concussion prevention and management policy and sporting rules and regulations. This systematic review aims to summarise the evidence on the association between concussion sustained by professional/elite athletes and long-term cognitive impairment.

methodsEmbase, PubMed and Web of Science were used to search for eligible studies. Studies including professional/elite athletes from any sport were considered. Three comparison groups were considered: internal comparison (concussed vs non-concussed athletes within the same sample); between-sport comparison (contact sport athletes vs non-contact sports ones); external comparison (athletes vs samples of the general population or population norms).

results14 studies were included (rugby, American football, ice hockey players, boxers and marital art fighters). The general quality of the evidence was poor. The overall evidence, weighted for type of comparison and study quality, points towards an association between sustaining a sport-related concussion and poorer cognitive function later in life in rugby, American football and boxing, although it is unclear to what extent this is clinically relevant. Data on ice hockey and martial arts were too sparse to allow conclusions to be drawn.

conclusionHigh-quality, appropriately designed and powered epidemiological studies are urgently needed to assess the association between sustaining a sport-related concussion and cognitive impairment later in life. Particular emphasis should be put on the clinical translational value of findings.

Indexed as

AthletesAthletic InjuriesBrain ConcussionCognitive DysfunctionHumansacquired brain injurycognitionconcussiondementia

Identifiers

PMID32107272
PMCPMC7231435

What OpenQuestion holds

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Registered trials

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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.