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The aim of this study was to determine the sociodemographic and MTBI-related variables associated with executive functioning (EF). Based on the theoretical model of Hou and colleagues, data on predisposing (age, education, premorbid IQ), precipitating (post-traumatic amnesia, loss of consciousness, presence of frontal lesions, post-accident time to evaluation) and perpetuating (anxious and depressive affects and post-concussive symptoms) factors were retrospectively collected from the medical records of 172 patients with MTBI. EF data based on the 3 processes included in Miyake's prediction model (2000) (updating, cognitive flexibility and inhibition) were collected using respectively the Digit span task of the Weschler – 4th edition, the Trails A and B as well as the initiation time on the Tower of London- Drexel University. Updating was significantly associated with education, premorbid IQ, age, anxiety, and depressive affect. Inhibition was associated with education and age. No variable was associated with cognitive flexibility. Following a MTBI, clinicians should consider that level of education and pre-morbid IQ may "predispose" patients to higher EF performances. They should also measure level of anxiety and depressive affect knowing that these may "perpetuate" some EF impairments (specifically the updating process). [ABSTRACT FROM AUTHOR]

Background: Although previous research studies have defined several prognostic factors that affect cognitive‐communication performance in patients with all traumatic brain injury (TBI) severity, little is known about what variables are associated with cognitive‐communication impairment in complicated mild TBI (mTBI) specifically. Aims: To determine which demographic and trauma‐related factors are associated with cognitive‐communication performance in the early recovery phase of acute care following a complicated mTBI. Methods & Procedures: Demographic and accident‐related data as well as the scores on cognitive‐communication skill measures in the areas of auditory comprehension (complex ideational material subtest of the Boston Diagnostic Aphasia Examination), verbal reasoning (verbal absurdities subtest of the Detroit Test of Learning Aptitude), confrontation naming (short form of the Boston Naming Test), verbal fluency (semantic category and letter category naming), and conversational discourse (conversational checklist of the Protocole Montréal d'évaluation de la communication) were retrospectively collected from the medical records of 128 patients with complicated mTBI admitted to a tertiary care trauma hospital. Multiple linear regressions analyses were carried out on the variables sex, age, education level, Glasgow Coma Scale (GCS) score, lesion site and bilingualism. Outcomes & Results: Females performed better than males on letter‐category naming, while those more advanced in age performed worse on most cognitive‐communication measures. Patients with higher education achieved better confrontation and letter‐category naming, whereas reading comprehension results were worse with a lower GCS score. Bilingual individuals presented more difficulty in conversational discourse skills than those who spoke only one language. In terms of site of lesion, the presence of a right frontal injury was associated with worse auditory and reading comprehension and an occipital lesion was related to worse confrontation naming. Conclusions & Implications: Cognitive‐communication skills should be evaluated early in all patients with complicated mTBI, but especially in those who are advanced in age, those with fewer years of education and those who present with lower GCS scores, in order to determine rehabilitation needs. The findings of this study will allow acute care clinicians to better understand how various demographic and injury‐related factors affect cognitive‐communication skills after complicated mTBI and to better nuance the interpretation of their evaluation results in order to improve clinical care. Further study is required regarding the influence of lesion location, sex and bilingualism following complicated mTBI. What this paper addsWhat is already known on the subjectIn early acute recovery studies including all severity of TBI, cognitive‐communication performance was poorer in individuals with more advanced age, those with fewer years of education and with more severe TBI. It is not yet known which demographic and injury‐related variables predict cognitive‐communication performance after a complicated mTBI specifically.What this paper adds to existing knowledgeWe confirmed that age, level of education and TBI severity, as measured with the GCS score, were associated with some areas of cognitive‐communication performance for a group of patients in the acute stage of recovery from a complicated mTBI. We also identified that sex, bilingualism and site of lesion were new variables that show an influence on aspects of cognitive‐communication skills in this group of patients.What are the potential or actual clinical implications of this work?The findings of this study on prognostic factors in the case of complicated mTBI will help acute care clinicians to better understand evaluation results knowing the variables that can influence cognitive‐communication performance and to nuance the interpretation of these results with the goal of determining rehabilitation needs and enhancing clinical care. [ABSTRACT FROM AUTHOR]

• Mild traumatic brain injury has a significant impact on reading comprehension and speed of reading. • No significant difference was found between the complicated and uncomplicated mild TBI groups on acute reading abilities. • A younger age and higher level of schooling was associated with better performances on reading. • In acute care, support should be provided to patients with mild traumatic brain injury when they are required to read. Several studies have investigated cognitive-communication disorders affecting oral expression skills following TBI but very few have dealt with reading comprehension abilities. The current study aims to measure reading comprehension and speed of reading in adults with uncomplicated and complicated mild traumatic brain injury (TBI) and to determine which demographic and TBI-related variables are predictive of their performance. The performances of three groups of participants were compared on the Chapman-Cook Speed of Reading Test (CCSRT). The CCSRT was administered in an acute care setting to 85 hospitalized participants with mild TBI showing traumatic cerebral lesions (complicated mild TBI), to 15 hospitalized participants with uncomplicated mild TBI (no cerebral lesions) and to 68 adults without TBI. Linear regression analyses were performed to determine which variables among sex, age, education, TBI severity (measured by the Glasgow Coma Scale score), speed of processing skills, and site of cerebral lesions significantly predicted CCSRT performances. The control group showed a lower percentage of errors than both TBI groups. On the total score of the CCSRT, the uncomplicated and complicated TBI groups performed worse than the control group. Moreover, as age and speed of processing skills increased, and education decreased, the odds of having a lower score on the CCSRT increased. These findings suggest that reading abilities are compromised after mild TBI. Furthermore, the CCSRT may be a useful bedside tool for clinicians who work with individuals with mild TBI. [ABSTRACT FROM AUTHOR]