Evidence map›Paper›PMID 30043690›Full record

ArticleSports health

Interrelationships Among Neuroimaging Biomarkers, Neuropsychological Test Data, and Symptom Reporting in a Cohort of Retired National Football League Players.

Andrew W Kuhn, Scott L Zuckerman, Gary S Solomon, Ira R Casson, David C Viano

Abstract read
In one paragraph

Article in Sports health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 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. Neuroimaging Biomarkers of Chronic Traumatic Encephalopathy: Targets for the Academic Memory Disorders Clinic.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2021
    Review
  8. Article
  9. Article
  10. Article
  11. 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

5 authors.

Andrew W KuhnVanderbilt Sports Concussion Center, Vanderbilt University School of Medicine, Nashville, Tennessee.
Scott L ZuckermanVanderbilt Sports Concussion Center, Vanderbilt University School of Medicine, Nashville, Tennessee.
Gary S SolomonVanderbilt Sports Concussion Center, Vanderbilt University School of Medicine, Nashville, Tennessee.
Ira R CassonDepartment of Neurology, Hofstra North Shore-LIJ School of Medicine, Hempstead, New York.
David C VianoProBiomechanics LLC, Bloomfield Hills, Michigan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStructural brain changes, potentially resulting from repetitive brain trauma (RBT), have been correlated with neurocognitive decline and increased symptom reporting in retired athletes. HYPOTHESIS: In a cohort of retired National Football League (NFL) players, the relationships between 3 neuroimaging parameters, neuropsychological testing, and symptom scores will be significantly correlated. STUDY

designCross-sectional study. LEVEL OF EVIDENCE: Level 3.

methodsComprehensive magnetic resonance imaging was performed in 45 retired NFL players. Three neuroanatomical parameters were assessed by board-certified radiologists blinded to the purpose of the study: (1) the absence or presence of small or large cavum septum pellucidum, (2) a global mean score of fractional anisotropy (FA), and (3) the presence or absence of microhemorrhages. The subjects underwent a battery of 9 paper-and-pencil neuropsychological tests, a computerized neurocognitive test, and multiple symptom and depression scales. The associations among the neuroimaging results with these outcome measures were assessed utilizing Pearson, Spearman rank, and point-biserial correlations.

resultsThe 45 subjects (mean age, 46.7 ± 9.1 years) reported a mean 6.9 (±6.2) concussions and 13.0 (±7.9) "dings" in the NFL. Ten (22%) did not have a cavum septum pellucidum, while 32 (71%) had a small and 3 (7%) had a large one. Four (9%) had microhemorrhages. Global FA mean was 0.459 (±0.035). The majority (50.8%) of correlations among the neuroimaging parameters and neurocognitive/symptom scores fell below the threshold of "small" effect size ( r < 0.10). The remaining (49.2%) correlations were between "small" and "medium" effect sizes (0.1 < r < 0.3). However, all correlations were statistically nonsignificant.

conclusionThere were minimal and statistically nonsignificant correlations among the neuroimaging, neurocognitive, and symptom scores examined in this cohort of NFL retirees. CLINICAL RELEVANCE: Associating the severity of structural brain changes to neurocognitive performance and symptom burden after RBT is complex may involve other moderating variables or biomarkers, and demands further study.

Indexed as

chronic impairmentcognitive functionNational Football Leagueneuroimagingneuropsychological testingneuroradiologysport-related concussion

Identifiers

PMID30043690
PMCPMC5315257

What OpenQuestion holds

Textmetadata
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.