Psychometric properties of two instruments assessing catastrophizing and fear-avoidance behavior in mild traumatic brain injury.

OBJECTIVE: Psychometrically sound measures of catastrophizing about symptoms and fear avoidance behavior are needed to further applications of the fear-avoidance model in mild traumatic brain injury (mTBI) for research and clinical purposes. To this end, two questionnaires were adapted (minor), the Postconcussion Symptom Catastrophizing Scale (PCS-CS) and the Fear of Mental Activity Scale (FMA). This study aimed to investigate the factor structure, internal consistency, test-retest reliability, and concurrent and construct validity of two adapted questionnaires in a sample of participants with mTBI compared to participants with orthopedic injury and healthy adults. METHOD: One hundred eighty-five mTBI participants (40% female), 180 participants with orthopedic injury (55% female), and 116 healthy adults (55% female) participated in the study. All participants were assessed at two time points (2 weeks postinjury and 3 months) using self-reported questionnaires. Data were collected using online questionnaires. RESULTS: Findings indicated a three-factor model (magnification, rumination, helplessness) with a higher order factor (catastrophizing) for the PCS-CS and a two-factor model (activity avoidance and somatic focus) for the FMA. The results showed strong internal consistency, good test-retest reliability, and good concurrent and convergent validity for the PCS-CS and FMA across all samples. CONCLUSIONS: This study has shown that the PCS-CS and FMA are psychometrically sound instruments and can be considered for valid and reliable assessment of catastrophizing about postconcussion like symptoms and fear-avoidance beliefs about mental activities. These instruments can be used in research and clinical practice applications of the fear-avoidance model and add to explanations of prolonged recovery after mTBI. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Long-term psychosocial outcome following mild traumatic brain injury and minor stroke: a direct longitudinal comparison.

BACKGROUND AND PURPOSE: Research suggests comparable long-term psychosocial outcomes following mild traumatic brain injury (mTBI) and minor stroke, but no direct comparison has been made. This study aimed to directly compare psychosocial outcome over time in persons with mTBI and minor stroke. METHODS: In this multicenter, prospective longitudinal cohort study, community-dwelling persons with mTBI (n = 182) and minor stroke (n = 48) were assessed at 6 weeks, 3, 6 and 12 months post-injury. Outcome measures included anxiety and depression symptoms (Hospital Anxiety and Depression Scale-HADS), cognitive problems in daily life (Checklist for Cognitive and Emotional Consequences of Stroke-CLCE-24) and quality of life (EuroQol-5D-5L-EQ-5D-5L). Multilevel growth curve modeling, controlled for demographic variables, was used to determine outcomes over time between groups. Proportions of persons reporting persistent psychosocial symptoms at 6 months post-injury were compared using Pearson's Chi-squared tests. RESULTS: Improvements in outcomes were observed in the first 6 months and effects stabilized to 12 months post-injury in both groups. Minor stroke cases reported significantly higher levels of HADS anxiety and a significantly reduced increase in EQ-5D-5L utility scores than mTBI cases, but differences were small in absolute numbers. No significant differences were observed between groups regarding HADS depression and CLCE-24 cognition scores. Proportions of persons reporting persistent psychosocial symptoms were equal between groups. CONCLUSIONS: Psychosocial outcome is largely comparable following mTBI and minor stroke. Specific attention should be paid to anxiety symptoms and cognitive problems in daily life for which uniform aftercare seems appropriate.

Relevance of the Fear-Avoidance Model for Chronic Disability after Traumatic Brain Injury.

Previous studies convincingly suggest that the biopsychosocial fear-avoidance model (FAM) may be of added value in understanding chronic disability after traumatic brain injury (TBI). In this model, persistent symptoms occur as a result of catastrophizing and fear-avoidance regarding initial symptoms, leading to depression, reduced mental activity, and greater disability in daily functioning. This study examined the FAM in a large English-speaking TBI sample. A cross-sectional study was conducted in 117 individuals with complicated mild, moderate, or severe TBI at 1-5 years post-injury. Participants completed questionnaires assessing personal, injury-related, and psychological characteristics. Reliability, correlational, and regression analyses were performed. Main outcome measures of chronic disability were depression, disuse (e.g., fewer mental activities), and functional disability. The results revealed that all correlations suggested by the FAM were significant. Catastrophizing thoughts were positively associated with TBI-related symptoms and fear-avoidance thoughts. Main outcome measures were positively associated with fear-avoidance thoughts and TBI-related symptoms. Further, variables in the FAM were of additive value to personal, injury-related, and psychological variables in understanding chronic disability after TBI. The separate regression analyses for depression, fewer mental activities, and disability revealed "fear-avoidance thoughts" as the only consistent variable. In conclusion, this study shows the association of the FAM with chronic disability after TBI, which has implications for assessment and future management of the FAM in TBI in English-speaking countries. Longitudinal studies are warranted to further investigate and refine the model.

Psychological factors after stroke: Are they stable over time?

OBJECTIVE: Psychological factors influence stroke outcomes, such as participation and quality of life. Although important for clinical practice, not much is known about the temporal stability of these factors. This study explored whether psychological factors are stable post-stroke. METHODS: Prospective longitudinal cohort study. The following psychological factors were assessed using self-report questionnaires at 2 months and at 2 years post-stroke: proactive coping, self-efficacy, extraversion, optimism, passive coping, neuroticism and pessimism. Changes over time, associations and dimensions among psychological factors were considered. RESULTS: Data for 324 participants were available. Only passive coping scores showed no change between 2 months and 2 years post-stroke. Participants showed less proactive coping, lower self-efficacy, less extraversion, less optimism, more neuroticism and more pessimism over time. All but one inter-correlation of psychological factors, r = [-0.14; 0.71], and all correlations over time, r = [0.42-0.64], were significant. At both time-points, the psychological factors clustered into an "adaptive psychological factor" (proactive coping, self-efficacy, extraversion) and a "maladaptive psychological factor" (passive coping, neuroticism). CONCLUSION: Across all psychological factors, changes toward less favourable scores were found. Clinicians should pay attention to adaptive and maladaptive psychological factors among stroke patients during long-term care.

Does the fear avoidance model explain persistent symptoms after traumatic brain injury?

BACKGROUND: A minority of patients with mild traumatic brain injury (mTBI) experience a persistent symptom complex also known as post-concussion syndrome. Explanations for this syndrome are still lacking. OBJECTIVE: To investigate if the fear avoidance model, including catastrophizing thoughts and fear avoidance behaviour, poses a possible biopsychosocial explanation for lingering symptoms and delay in recovery after traumatic brain injury (TBI) with special focus on mTBI. DESIGN: Cross-sectional study. PARTICIPANTS: 48 patients with TBI, of which 31 patients with mTBI, had persistent symptoms (mean time since injury 48.2 months); 92% of the entire sample fulfilled the criteria for post-concussion syndrome. OUTCOME VARIABLES: catastrophizing, fear-avoidance, depression and post-concussion symptoms. RESULTS: High levels of catastrophizing were found in 10% and high levels of fear avoidance behaviour were found in 35%. Catastrophizing, fear avoidance behaviour, depressive symptoms and post-concussion symptoms correlated significantly with each other (p < 0.05). CONCLUSION: The fear-avoidance model proposes a possible explanation for persistent symptoms. Validation and normative data are needed for suitable measures of catastrophizing and fear avoidance of post-concussion symptoms after TBI. Longitudinal prospective cohort studies are needed to establish its causal and explanatory nature.

Explaining fatigue in multiple sclerosis: cross-validation of a biopsychosocial model.

Fatigue is a common and disabling symptom in patients with multiple sclerosis (MS), but its pathogenesis is still poorly understood and consequently evidence-based treatment options are limited. Bol et al. (J Behav Med 33(5):355-363, 2010) suggested a new model, which explains fatigue in MS from a biopsychosocial perspective, including cognitive-behavioral factors. For purposes of generalization to clinical practice, cross-validation of this model in another sample of 218 patients with MS was performed using structural equation modeling. Path analysis indicated a close and adequate global fit (RMSEA = 0.053 and CFI = 0.992). The cross-validated model indicates a significant role for disease severity, depression and a fear-avoidance cycle in explaining MS-related fatigue. Modifiable factors, such as depression and catastrophizing thoughts, propose targets for treatment options. Our findings are in line with recent evidence for the effectiveness of a new generation of cognitive behavioral therapy, including acceptance and mindfulness-based interventions, and provide a theoretical framework for treating fatigue in MS.