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Meta-Analysis
. 2017 Jul/Aug;9(4):324-332.
doi: 10.1177/1941738117713974.

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

Bara Alsalaheen  1   2   3 , Kayla Stockdale  1 , Dana Pechumer  1 , Alexander Giessing  4 , Xuming He  4 , Steven P Broglio  5
Affiliations
Meta-Analysis

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

Bara Alsalaheen et al. Sports Health. 2017 Jul/Aug.

Abstract

Context: It 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.

Objective: To 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 design: Systematic 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.

Results: A 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.

Conclusion: With 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.

Keywords: concussion; mild traumatic brain injury; neurocognitive.

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Conflict of interest statement

The authors report no potential conflicts of interest in the development and publication of this article.

Figures

Figure 1.
Figure 1.
Search process.
Figure 2.
Figure 2.
Effect of 1 concussion on baseline ImPACT (Immediate Post-concussion Assessment and Cognitive Test) performance.
Figure 3.
Figure 3.
Effect of multiple concussions on baseline ImPACT (Immediate Post-concussion Assessment and Cognitive Test) performance.
See this image and copyright information in PMC

References

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