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Computerized Neurocognitive Testing within 1 Week of Sport-Related Concussion: Meta-analytic Review and Analysis of Moderating Factors

  • Anthony P. Kontos (a1), Rock Braithwaite (a2), Scott Dakan (a1) and R.J. Elbin (a3)

The purpose of this study is to perform a meta-analysis assessing the effects of sport-related concussion as measured by computerized neurocognitive tests (NCT) 1-week post injury. Thirty-seven studies involving 3960 participants between 2000 and 2011 were included. Hedge's g provides an adjusted effect size for smaller sample sizes and was calculated for overall and cognitive task effects, and subgroup analyses were conducted for age, type of NCT, and sport. Concussions had a low negative effect (g = −0.16; p < .001) across all groups, outcomes, and time points. Code substitution (g = −0.27; p < .05), visual memory (g = −0.25; p < .05), processing speed (g = −0.18; p < .05), and memory (g = −0.21; p < .05) tasks demonstrated negative effects for concussion. Younger adolescents had lower (g = −0.29; p < .05) NCT performance than older adolescents (g = −0.01) and college aged athletes (g = −0.11). ImPACT studies (g = −0.19; p < .05) demonstrated a negative effect for concussion as did those involving contact sports (g = −0.20; p < .05). A low to moderate overall effect size of concussion on neurocognitive performance was supported. Subgroup analyses revealed different effect sizes for specific cognitive tasks, types of NCTs, age, and type of sport. (JINS, 2014, 20, 1–9)

Corresponding author
Correspondence and reprint requests to: Anthony P. Kontos, UPMC Sports Medicine Concussion Program, Department of Orthopedic Surgery, University of Pittsburgh, UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania 15203. E-mail:
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M. Aubry , R. Cantu , J. Dvorak , T. Graf-Baumann , K. Johnston , J. Kelly , P. Schamasch (2002). Summary and agreement statement of the first international conference on concussion in sport, vienna 2001. Physician and Sportsmedicine, 30, 5763.

M. Borenstein , L.V. Hedges , J.P.T. Higgins , H.R. Rothstein (2009). Introduction to meta-analysis. Chichester, UK: Wiley.

M. Borenstein , L.V. Hedges , J.P.T. Higgins , H.R. Rothstein (2010). A basic introduction to fixed effect and random effects models for meta-analysis. Research Synthesis Methods, 1, 97111.

S.P. Broglio , T.W. Puetz (2008). The effect of sport concussion on neurocognitive function, self-report symptoms and postural control: A meta-analysis. Sports Medicine, 38, 5367.

J. Cohen (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Hillsdale, NJ: Lawerence Erlbaum Associates.

M.W. Collins , G.L. Iverson , M.R. Lovell , D.B. McKeag , J. Norwig , J. Maroon (2003). On-field predictors of neuropsychological and symptom deficit following sports-related concussion. Clinical Journal of Sport Medicine, 13, 222229.

M. Egger , G. Davey Smith , M. Schneider , C. Minder (1997). Bias in meta-analysis detected by a simple, graphical test. British Medical Journal, 315, 629634.

M. Field , M.W. Collins , M.R. Lovell , J. Maroon (2003). Does age play a role in recovery from sports-related concussion? A comparison of high school and collegiate athletes. Journal of Pediatrics, 142, 546553.

L.V. Hedges , I. Olkin (1985). Statistical methods for meta-analysis. Orlando, FL: Academic Press.

J.P. Higgins , S.G. Thompson , J.J. Deeks , D.G. Altman (2003). Measuring inconsistency in meta-analyses. British Medical Journal, 327, 557560.

J.E. Hunter , F.L. Schmidt (2000). Fixed effects vs. random effects meta-analysis models: Implications for cumulative knowledge in psychology. International Journal of Selection and Assessment, 8, 275292.

J.A. Langlois , W. Rutland-Brown , M.M. Wald (2006). The epidemiology and impact of traumatic brain injury: A brief overview. Journal of Head Trauma Rehabilitation, 21, 375378.

P. McCrory , W. Meeuwisse , K. Johnston , J. Dvorak , M. Aubry , M. Molloy , R. Cantu (2009). Consensus statement on Concussion in Sport 3rd International Conference on Concussion in Sport held in Zurich, November 2008. Clinical Journal of Sport Medicine, 19, 185200.

R. Rosenthal (1979). The “File Drawer Problem” and tolerance for null results. Psychological Bulletin, 86, 638641.

H.R. Rothstein , A.J. Sutton , M. Borenstein (2005). Publication bias in meta-analysis: Prevention assessment and adjustments. Chichester, UK: John Wiley.

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Journal of the International Neuropsychological Society
  • ISSN: 1355-6177
  • EISSN: 1469-7661
  • URL: /core/journals/journal-of-the-international-neuropsychological-society
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