Implementation of resource facilitation to assess referral needs and promote access to state vocational rehabilitation services in people with traumatic brain injury.

Resource facilitation (RF) has shown promise for improving return to work (RTW) after traumatic brain injury (TBI), but little is known about the RF needs of people recruited from acute trauma settings. In this descriptive study, we sought to track referral needs, describe problems in accessing state vocational rehabilitation (VR) services, and highlight the role of RF in overcoming these difficulties in 45 adults with complicated mild to severe TBI seeking RTW who were recruited from acute trauma care. Participants received a referral to the state VR agency, along with RF services for up to one year. Case coordinators (CCs) conducted biweekly assessments, provided referrals, and helped address problems in accessing services. On average 4.92 referrals were generated per participant; 91% required referrals. CCs made 44% of referrals, while physicians/other healthcare professionals generated 33% and VR counsellors generated 23%. CCs filled a gap in referring for financial and transportation difficulties. Two case studies illustrate implementation of the RF paradigm. RF provides systematic assessment and referral for services needed to facilitate utilisation of state VR services. Among persons with TBI recruited from acute trauma settings in the US, CCs provide referrals that are often not generated by other sources.

Factors Associated with Word Memory Test Performance in Persons with Medically Documented Traumatic Brain Injury.

OBJECTIVES: (1) To examine the rate of poor performance validity in a large, multicenter, prospectively accrued cohort of community dwelling persons with medically documented traumatic brain injury (TBI), (2) to identify factors associated with Word Memory Test (WMT) performance in persons with TBI. METHOD: This was a prospective cohort, observational study of 491 persons with medically documented TBI. Participants were administered a battery of cognitive tests, questionnaires on emotional distress and post-concussive symptoms, and a performance validity test (WMT). Additional data were collected by interview and review of medical records. RESULTS: One hundred and seventeen participants showed poor performance validity using the standard cutoff. Variable cluster analysis was conducted as a data reduction strategy. Findings revealed that the 10 cognitive tests and questionnaires could be summarized as 4 indices of emotional distress, speed of cognitive processing, verbal memory, and verbal fluency. Regression models revealed that verbal memory, emotional distress, age, and injury severity (time to follow commands) made unique contribution to prediction of poor performance validity. CONCLUSIONS: Poor performance validity was common in a research sample of persons with medically documented TBI who were not evaluated in conjunction with litigation, compensation claims, or current report of symptoms. Poor performance validity was associated with poor performance on cognitive tests, greater emotional distress, lower injury severity, and greater age. Many participants expected to have residual deficits based on initial injury severity showed poor performance validity.

Prognostic importance of self-reported traits/problems/strengths and environmental barriers/facilitators for predicting participation outcomes in persons with traumatic brain injury: a systematic review.

OBJECTIVE: To conduct a systematic review of the prognostic value of self-reported traits/problems/strengths and environmental barriers/facilitators for participation outcomes in persons with traumatic brain injury (TBI). DATA SOURCES: Articles published through August 15, 2013, obtained by conducting electronic searches of PubMed, PsycINFO, and Cumulative Index to Nursing and Allied Health Literature databases and a review of reference lists of reviewed articles. STUDY SELECTION: Reviewed articles were written in English and presented findings on adult humans with TBI, participation outcomes, and ≥ 1 self-reported trait/problem/strength (eg, depression, pain, coping style) and/or ≥ 1 environment barrier/facilitator (eg, social support, family functioning, access to services). DATA EXTRACTION: Each of the 996 abstracts was examined by 2 reviewers, and those failing to meet all inclusion criteria were excluded. Data were extracted from the 63 retained articles by 2 independent reviewers, who met to resolve any differences in study quality rating or evidence recorded. Study quality was determined using American Academy of Neurology (AAN) criteria. DATA SYNTHESIS: Conclusions regarding prognostic importance of self-report and environmental barrier/facilitator variables were made using AAN criteria. Conclusions regarding barrier/facilitator variables indicated that access to transportation, access to services, and participation in social interaction were possibly predictive of employment outcome, whereas living arrangements and social support were possibly not predictive of employment outcome. Conclusions regarding self-report variables indicated that the number of postconcussive symptoms, fatigue, and physical competence were probably predictive of employment and need for supervision, whereas self-efficacy was probably not predictive of employment. Subjective well-being, pain, and social interaction were possibly predictive of employment, whereas coping style was possibly not predictive. CONCLUSIONS: Although additional investigation is needed, self-report variables are likely to make important contributions to predicting participation outcomes. Future research should be guided by coherent conceptual models and use a consistent set of assessment instruments to facilitate comparisons between studies.

Are there cognitive and neurobehavioural correlates of hormonal neuroprotection for women after TBI?

This study examined possible cognitive correlates of hormonal neuroprotection following traumatic brain injury (TBI) using archival neuropsychological findings for 1563 individuals undergoing acute TBI rehabilitation between 1989 and 2002. Presumed age of menopause was based on the STRAW (Stages of Reproductive Aging) staging system (Soules, 2005; Soules et al., 2001) and general linear model (GLM) analysis of performance on neuropsychological testing by participants across gender and age groups (25-34, 35-44, 45-54, and 55-64) was performed. Hypotheses were (1) women with TBI in the oldest age group would have lower scores on neuropsychological tests and functional outcome measures than women in the younger groups, and (2) men in the oldest age group would have higher scores than women of the same age group. Analyses revealed that oldest females had significantly worse Trails B and SDMT written and oral scores than the youngest females. In addition, oldest females had significantly better Trails B, Rey AVLT and SDMT written scores than the oldest males. Possible cohort exposure to hormone replacement therapy, unknown hormonal status at time of testing, and sample-specific injury characteristics may have contributed to these findings.

Serial recall of visuospatial and verbal information with and without material-specific interference: implications for contemporary models of working memory.

A longstanding question in working memory (WM) research concerns the fractionation of verbal and nonverbal processing. Although some contemporary models include both domain-specific and general-purpose mechanisms, the necessity to postulate differential processing of verbal and nonverbal material remains unclear. In the present two-experiment series we revisit the order reconstruction paradigm that Jones, Farrand, Stuart, and Morris (1995) used to support a unitary model of WM. Goals were to assess (1) whether serial position curves for dot positions differ from curves for letter names; and (2) whether selective interference can be demonstrated. Although we replicated Jones et al.'s finding of similar serial position curves for the two tasks, this similarity could reflect the demands of the order reconstruction paradigm rather than undifferentiated processing of verbal and nonverbal stimuli. Both generalised and material-specific interference was found, which can be attributed to competition between primary and secondary tasks for attentional resources. As performance levels for the combined primary and secondary tasks exceed active WM capacity limits, primary task items apparently are removed from active memory during processing of the secondary list and held temporarily in maintenance storage. We conclude that active WM is multimodal but maintenance stores may be domain specific.

Preinjury predictors of life satisfaction at 1 year after traumatic brain injury.

OBJECTIVE: To investigate the predictive value of preinjury factors for satisfaction with life (SWL) at 1-year posttraumatic brain injury (TBI). DESIGN: Secondary analysis of prospective, longitudinal registry using data collected during inpatient rehabilitation and at 1-year post-TBI. SETTING: Fifteen specialized brain injury units providing acute rehabilitation care as part of the Traumatic Brain Injury Model Systems (TBIMS) program. PARTICIPANTS: Community-dwelling persons (N=444) with moderate to severe TBI aged 16 to 64 years enrolled in the TBIMS program between October 2007 and October 2008 with 1-year follow-up data. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURE: Satisfaction With Life Scale (SWLS). RESULTS: Hierarchical stepwise linear regression revealed that injury-related and demographic variables did not contribute significantly to the explained variance in SWLS scores. In contrast, the preinjury functioning (education, productivity/employment) and preinjury condition (psychiatric and substance use problems, severe sensory dysfunction, learning problems, prior TBI) blocks each contributed significantly to the explained variance in SWLS scores. Preinjury functioning accounted for 2.9% of the variance and preinjury conditions for 3.8%. CONCLUSIONS: Although their contributions are small, preinjury functioning and preinjury conditions are important to consider in the prediction of SWL post-TBI. Educational level and history of psychiatric and other premorbid difficulties are particularly important for clinicians to consider when implementing or developing interventions for persons with moderate to severe TBI.

Medical and psychosocial predictors of caregiver distress and perceived burden following traumatic brain injury.

OBJECTIVE: To determine whether caregivers' medical and psychiatric histories, coping style, and social support predict global distress and perceived burden. DESIGN: Correlational, cohort study. PARTICIPANTS: A total of 114 caregivers of persons with moderate to severe traumatic brain injury, assessed 1 year postinjury. MEASURES: Ratings of caregivers' medical and psychiatric history; Disability Rating Scale; Ways of Coping Questionnaire; Multidimensional Scale of Perceived Social Support; Brief Symptom Inventory; and Modified Caregiver Appraisal Scale. RESULTS: Caregivers' medical and psychiatric histories predicted global distress, after accounting for education, sex, income, and relationship, as well as disability of the person with injury. Increased use of escape-avoidance as a coping strategy was related to increased distress. Perceived burden was predicted by disability in the person with injury, use of escape-avoidance, and perceived social support. CONCLUSIONS: Caregivers' preinjury functioning is more predictive of global distress, whereas the functioning of the person with injury is more predictive of injury-related burden. Caregivers' medical and psychiatric histories are important considerations when targeting interventions; global stress management strategies may be as important as assisting with injury-related issues.

Perceptions of communication abilities for persons with traumatic brain injury: validity of the La Trobe Communication Questionnaire.

PRIMARY OBJECTIVE: To further evaluate the construct validity of the La Trobe Communication Questionnaire (LCQ) and to investigate the extent to which self-ratings of adults with traumatic brain injury compared to ratings made by close others and self-ratings made by non-injured matched controls. RESEARCH DESIGN: Prospective cohort study. METHODS AND PROCEDURES: Two hundred and seventy-six adults with TBI (121 of which are >1-year post-injury and previously enrolled in TBI Model Systems and 155 of which were consecutively admitted to a Level 1 trauma centre and were at least 6-months post-injury) completed the La Trobe Communication Questionnaire. In addition, for the TBI Model systems sample, 88 friends/family members and 80 non-injured matched controls participated. MAIN OUTCOMES AND RESULTS: Principle components analysis with varimax rotation yielded four factors: Initiation/Conversational Flow, Disinhibition/Impulsivity, Conversational Effectiveness and Partner Sensitivity, which were found to have adequate internal consistency. Adequate discriminative validity was obtained in comparing adults with TBI to non-injured matched controls, while no significant differences were found between self-ratings of communication abilities by adults with TBI and those made by close others. CONCLUSIONS: Additional support for the LCQ as a useful measure of perceived social communication abilities was obtained. Confirmatory factor analysis with a larger sample of adults with TBI will be a useful step in further development of this tool.