Evidence map›Paper›PMID 30080796›Full record

ArticleThe Journal of head trauma rehabilitation

A Preliminary Study of Early-Onset Dementia of Former Professional Football and Hockey Players.

Barry S Willer, Robert Zivadinov, Mohammad N Haider, Jeffrey C Miecznikowski, John J Leddy

Abstract read
In one paragraph

Article in The Journal of head trauma rehabilitation. 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
2.3field-weighted citation impact, top 12% 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

7 citing papers in PubMed, 2 syntheses or guidelines pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. A systematic review on the risk of neurodegenerative diseases and neurocognitive disorders in professional and varsity athletes.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Pooled it
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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

5 authors at 1 institution in 1 country.

Barry S WillerDepartments of Psychiatry (Dr Willer), Neurology (Dr Zivadinov), Orthopedics and Sports Medicine (Drs Haider and Leddy), Biostatistics (Miecznikowski), School of Medicine and Biomedical Sciences, University at Buffalo, New York.
Robert Zivadinov
Mohammad N Haider
Jeffrey C Miecznikowski
John J Leddy
National Institutes of Health · US

Funding

University of Buffalo Clinical and Translational Science Institute - Supplement SchulyerUL1TR001412 · NCATS · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI MURPHY, TIMOTHY F · 2015 to 2024
$33.8M
NCATS NIH HHS UL1 TR001412
6 · The paper itself

Abstract

objectiveTo provide an overview of 3 studies of the same population of retired professional contact sport athletes compared with age-matched noncontact sport athlete controls on cognition, executive function, behavior, and advanced brain imaging.

settingUniversity Concussion Management Clinic.

participantsTwenty-two retired professional hockey and football athletes (average age 56 years) and 21 age-matched noncontact sport athlete controls.

designCase control. MAIN MEASURES: Participants were assessed on a broad range of neuropsychological measures that are associated with identification of mild cognitive impairment and executive function. Athletes were also assessed using self-report measures of executive function and personality. Advanced structural and functional imaging techniques were utilized as well.

resultsThe former National Football League and National Hockey League athletes perceived themselves to have impaired executive function, but this was not confirmed by objective neurocognitive assessment. No significant differences were found when comparing contact-sport athletes with controls on the presence of mild cognitive impairment or brain structural and functional tissue injury. Contact sport athletes were more anxious and more likely to report unusual beliefs and experiences.

conclusionNone of the retired contact sport athletes qualified as having early-onset dementia consistent with chronic traumatic encephalopathy. There were no remarkable differences in imaging, cognition, behavior, or executive function from noncontact sport athletes. The results underscore an apparent disconnect between public perceptions and evidence-based conclusions about the inevitability of chronic traumatic encephalopathy and the potential neurodegenerative effect on former athletes from contact sports.

Indexed as

FootballHockeyMagnetic Resonance ImagingNeuropsychological TestsAthletesBrainCase-Control StudiesChronic Traumatic EncephalopathyCognitive DysfunctionDementiaExecutive FunctionHumansImaging, Three-DimensionalMaleMiddle AgedPhysical Examination

Identifiers

PMID30080796
PMCPMC6126972
OpenAlexW2885314592

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.