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Abstract
Primary objective: This study aimed to identify and characterize profiles of executive functions (EF) following traumatic brain injury (TBI).
Research design: The sample was comprised of 84 adult outpatients with mild and moderate/severe TBI who were assessed by means of a battery of EF tasks. A Hierarchical Cluster analysis was performed with tasks Z-scores. Clusters were compared by means of ANOVA and Chi-square analyses.
Main outcomes and results: Three clusters were characterized by deficits in: (1) inhibition, flexibility and focused attention; (2) inhibition, flexibility, working memory and focused attention; and (3) no expressive executive deficits. Clusters did not differ in clinical or demographical variables.
Conclusions: The first cluster replicated findings of previous studies on TBI EF profiles. IT is suggested that TBI rehabilitation studies of EF must select participants by their EF profile rather than for clinical or demographical variables.
Acknowledgments
Data collection and organization was supported by team work of the students Camila Borges Paraná, Simone Begni and Renata Pereira. Also, we thank Ricardo Gurgel Rebouças, MD, for institutional contacts to data collection and Tulio Becker Hainzenreder, MD, for training support on the analysis of traumatic brain injury lesions. This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the first author studentship.
Declaration of interest
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.