Cognitive Training for Post-Acute Traumatic Brain Injury: A Systematic Review and Meta-Analysis
AuthorHallock, H; Collins, D; Lampit, A; Deol, K; Fleming, J; Valenzuela, M
Source TitleFrontiers in Human Neuroscience
PublisherFRONTIERS MEDIA SA
University of Melbourne Author/sLampit, Amit
Document TypeJournal Article
CitationsHallock, H., Collins, D., Lampit, A., Deol, K., Fleming, J. & Valenzuela, M. (2016). Cognitive Training for Post-Acute Traumatic Brain Injury: A Systematic Review and Meta-Analysis. FRONTIERS IN HUMAN NEUROSCIENCE, 10 (OCT2016), https://doi.org/10.3389/fnhum.2016.00537.
Access StatusOpen Access
Objective: To quantitatively aggregate effects of cognitive training (CT) on cognitive and functional outcome measures in patients with traumatic brain injury (TBI) more than 12-months post-injury. Design: We systematically searched six databases for non-randomized and randomized controlled trials of CT in TBI patients at least 12-months post-injury reporting cognitive and/or functional outcomes. Main Measures: Efficacy was measured as standardized mean difference (Hedges' g) of post-training change. We investigated heterogeneity across studies using subgroup analyses and meta-regressions. Results: Fourteen studies encompassing 575 patients were included. The effect of CT on overall cognition was small and statistically significant (g = 0.22, 95%CI 0.05 to 0.38; p = 0.01), with low heterogeneity (I2 = 11.71%) and no evidence of publication bias. A moderate effect size was found for overall functional outcomes (g = 0.32, 95%CI 0.08 to 0.57, p = 0.01) with low heterogeneity (I2 = 14.27%) and possible publication bias. Statistically significant effects were also found only for executive function (g = 0.20, 95%CI 0.02 to 0.39, p = 0.03) and verbal memory (g = 0.32, 95%CI 0.14 to 0.50, p < 0.01). Conclusion: Despite limited studies in this field, this meta-analysis indicates that CT is modestly effective in improving cognitive and functional outcomes in patients with post-acute TBI and should therefore play a more significant role in TBI rehabilitation.
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