Research Reports - Interindividual variability in recovery after traumatic brain injury: Effect of cognitive reserve

Med Clin (Barc). 2013 Mar 4

García-Molina A, Enseñat-Cantallops A, Sánchez-Carrión R, Rodríguez P, Tormos JM, Roig-Rovira T

BACKGROUND AND OBJECTIVE: The aim of this study was to examine the effect of
cognitive reserve in recovery after a moderate or severe traumatic brain injury
(TBI). Different authors proposed that this construct might account for the
mismatch between TBI severity, its clinical expression, and subsequent recovery.
PATIENTS AND METHOD: Eighty-four patients who sustained moderate-to-severe TBI
participated in the study. Participants were divided into a high cognitive
reserve group (n=46) or low cognitive reserve group (n=38) based on premorbid
educational and occupational attainment. Patient's functional status was examined
with the Patient Competency Rating Scale (PCRS). RESULTS: There were no
significant differences between groups in demographic and injury variables (sex,
age, severity of injury, post-traumatic amnesia duration, and time since injury).
The analysis revealed statistically significant differences between the 2 groups
on the PCRS: The high cognitive reserve group scored better than the low
cognitive reserve group. CONCLUSIONS: The results of this study suggest that
cognitive reserve may mediate recovery after a moderate or severe TBI.
Educational and occupational attainments provide a cognitive provision that would
be associated with better functional status after injury.

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