Evidence map›Paper›PMID 28661827›Full record

SynthesisSports health

Cumulative Effects of Concussion History on Baseline Computerized Neurocognitive Test Scores: Systematic Review and Meta-analysis.

Bara Alsalaheen, Kayla Stockdale, Dana Pechumer, Alexander Giessing, Xuming He, Steven P Broglio

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Sports health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 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

12 citing papers in PubMed, 1 synthesis or guideline 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

6 authors.

Bara AlsalaheenDepartment of Physical Therapy, University of Michigan-Flint, Flint, Michigan.
Kayla StockdaleDepartment of Physical Therapy, University of Michigan-Flint, Flint, Michigan.
Dana PechumerDepartment of Physical Therapy, University of Michigan-Flint, Flint, Michigan.
Alexander GiessingDepartment of Statistics, University of Michigan, Ann Arbor, Michigan.
Xuming HeDepartment of Statistics, University of Michigan, Ann Arbor, Michigan.
Steven P BroglioNeurotrauma Research Laboratory, University of Michigan, Ann Arbor, Michigan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextIt is unclear whether individuals with a history of single or multiple clinically recovered concussions exhibit worse cognitive performance on baseline testing compared with individuals with no concussion history.

objectiveTo analyze the effects of concussion history on baseline neurocognitive performance using a computerized neurocognitive test. DATA SOURCES: PubMed, CINAHL, and psycINFO were searched in November 2015. The search was supplemented by a hand search of references. STUDY SELECTION: Studies were included if participants completed the Immediate Post-concussion Assessment and Cognitive Test (ImPACT) at baseline (ie, preseason) and if performance was stratified by previous history of single or multiple concussions. STUDY

designSystematic review and meta-analysis. LEVEL OF EVIDENCE: Level 2. DATA EXTRACTION: Sample size, demographic characteristics of participants, as well as performance of participants on verbal memory, visual memory, visual-motor processing speed, and reaction time were extracted from each study.

resultsA random-effects pooled meta-analysis revealed that, with the exception of worsened visual memory for those with 1 previous concussion (Hedges g = 0.10), no differences were observed between participants with 1 or multiple concussions compared with participants without previous concussions.

conclusionWith the exception of decreased visual memory based on history of 1 concussion, history of 1 or multiple concussions was not associated with worse baseline cognitive performance.

Indexed as

CognitionNeuropsychological TestsAthletic InjuriesBrain ConcussionHumansMemoryReaction Timeconcussionmild traumatic brain injuryneurocognitive

Identifiers

PMID28661827
PMCPMC5496709

What OpenQuestion holds

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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.