Evidence map›Paper›PMID 27979411›Full record

ArticleMayo Clinic proceedings2017

High School Football and Late-Life Risk of Neurodegenerative Syndromes, 1956-1970.

Pieter H H Janssen, Jay Mandrekar, Michelle M Mielke, J Eric Ahlskog, Bradley F Boeve, Keith Josephs, Rodolfo Savica

Open access · greenAbstract read
In one paragraph

Article in Mayo Clinic proceedings, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 3 pooled it
5.7field-weighted citation impact, top 3% 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

26 citing papers in PubMed, 3 syntheses or guidelines pooled it, 100 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
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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

7 authors at 2 institutions in 3 countries.

Pieter H H JanssenRadboud University, Nijmegen, the Netherlands; Department of Neurology, Mayo Clinic College of Medicine, Rochester, MN; Mr. Janssen completed the study while on leave from Radboud University.
Jay MandrekarDepartment of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, MN.
Michelle M MielkeDepartment of Neurology, Mayo Clinic College of Medicine, Rochester, MN; Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, MN.
J Eric AhlskogDepartment of Neurology, Mayo Clinic College of Medicine, Rochester, MN.
Bradley F BoeveDepartment of Neurology, Mayo Clinic College of Medicine, Rochester, MN.
Keith JosephsDepartment of Neurology, Mayo Clinic College of Medicine, Rochester, MN.
Rodolfo SavicaDepartment of Neurology, Mayo Clinic College of Medicine, Rochester, MN; Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, MN. Electronic address: savica.rodolfo@mayo.edu.
Mayo Clinic · USRadboud University Nijmegen · NL

Funding

Rochester Epidemiology ProjectR01AG034676 · NIA · MAYO CLINIC ROCHESTER · PI ROCCA, WALTER A, ST SAUVER, JENNIFER LYNN · 2010 to 2019
$9.5M
NIA NIH HHS R01 AG034676
6 · The paper itself

Abstract

objectiveTo assess whether athletes who played American varsity high school football between 1956 and 1970 have an increased risk of neurodegenerative diseases later in life. PATIENTS AND

methodsWe identified all male varsity football players between 1956 and 1970 in the public high schools of Rochester, Minnesota, and non-football-playing male varsity swimmers, wrestlers, and basketball players. Using the medical records linkage system of the Rochester Epidemiology Project, we ascertained the incidence of late-life neurodegenerative diseases: dementia, parkinsonism, and amyotrophic lateral sclerosis. We also recorded medical record-documented head trauma during high school years.

resultsWe identified 296 varsity football players and 190 athletes engaging in other sports. Football players had an increased risk of medically documented head trauma, especially if they played football for more than 1 year. Compared with nonfootball athletes, football players did not have an increased risk of neurodegenerative disease overall or of the individual conditions of dementia, parkinsonism, and amyotrophic lateral sclerosis.

conclusionIn this community-based study, varsity high school football players from 1956 to 1970 did not have an increased risk of neurodegenerative diseases compared with athletes engaged in other varsity sports. This was from an era when there was a generally nihilistic view of concussion dangers, less protective equipment, and no prohibition of spearing (head-first tackling). However, the size and strength of players from previous eras may not be comparable with that of current high school athletes.

Indexed as

AdolescentAmyotrophic Lateral SclerosisAthletesAthletic InjuriesBasketballCraniocerebral TraumaDementiaFootballHumansMaleMedical Record LinkageMinnesotaNeurodegenerative DiseasesParkinson DiseasePoisson DistributionRisk Assessment

Identifiers

PMID27979411
PMCPMC5452974
OpenAlexW2564900342

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.