Nadine Sasse

Quality of Life after Brain Injury (QOLIBRI): Scale Validity and Correlates of Quality of Life

The QOLIBRI (Quality of Life after Brain Injury) is a novel health-related quality-of-life (HRQoL) instrument specifically developed for traumatic brain injury (TBI). It provides a profile of HRQoL in six domains together with an overall score. Scale validity and factors associated with HRQoL were investigated in a multi-center international study. A total of 795 adults with brain injury were studied from 3 months to 15 years post-injury. The majority of participants (58%) had severe injuries as assessed by 24-h worst Glasgow Coma Scale (GCS) score. Systematic relationships were observed between the QOLIBRI and the Glasgow Outcome Scale-Extended (GOSE), Hospital Anxiety and Depression Scale (HADS), and SF-36. Within each scale patients with disability reported having low HRQoL in two to three times as many areas as those who had made a good recovery. The main correlates of the total QOLIBRI score were emotional state (HADS depression and anxiety), functional status (amount of help needed and outcome on the GOSE), and comorbid health conditions. Together these five variables accounted for 58% of the variance in total QOLIBRI scores. The QOLIBRI is the first tool developed to assess disease-specific HRQoL in brain injury, and it contains novel information not given by other currently available assessments.

QOLIBRI Overall Scale: a brief index of health-related quality of life after traumatic brain injury

Background The Quality of Life after Brain Injury (QOLIBRI) scale is a recently developed instrument that provides a profile of health-related quality of life (HRQoL) in domains typically affected by brain injury. However, for global assessment it is desirable to have a brief summary measure. This study examined a 6-item QOLIBRI Overall Scale (QOLIBRI-OS), and considered whether it could provide an index of HRQoL after traumatic brain injury (TBI). Methods The properties of the QOLIBRI-OS were studied in a sample of 792 participants with TBI recruited from centres in nine countries covering six languages. An examination of construct validity was undertaken on a subsample of 153 participants recruited in Germany who had been assessed on two relevant brief quality of life measures, the Satisfaction With Life Scale and the Quality of Life Visual Analogue Scale. Results The reliability of the QOLIBRI-OS was good (Cronbachs α=0.86, test–retest reliability =0.81) and similar in participants with higher and lower cognitive performance. Factor analysis indicated that the scale is unidimensional. Rasch analysis also showed a satisfactory fit with this model. The QOLIBRI-OS correlates highly with the total score from the full QOLIBRI scale (r=0.87). Moderate to strong relationships were found among the QOLIBRI-OS and the Extended Glasgow Outcome Scale, Short-Form-36, and Hospital Anxiety and Depression scale (r=0.54 to -0.76). The QOLIBRI-OS showed good construct validity in the TBI group. Conclusions The QOLIBRI-OS assesses a similar construct to the QOLIBRI total score and can be used as a brief index of HRQoL for TBI.

Self-awareness and health-related quality of life after traumatic brain injury

Objective:To investigate the relations among self-awareness (SA), impaired SA, and health-related quality of life (HRQOL) after traumatic brain injury (TBI). Participants:One hundred forty-one adults hospitalized with TBI and their significant others from a cross-sectional multicenter study. Using Glasgow Coma Scale classification, 32 participants had severe injuries, 29 moderate, 44 mild, and 25 complicated mild TBI. Measures:Patient Competency Rating Scale for Neurorehabilitation; Short Form-36 Health Survey; Cognitive Quality of Life; Quality Of Life after Brain Injury; Hospital Anxiety and Depression Scale; Profile of Mood States; Glasgow Outcome Scale Extended. Method:Patient Competency Rating Scale for Neurorehabilitation ratings made by participants and their significant others were used to assess SA and discrepancies between the 2 ratings were used to define impaired SA. Results:Significant associations were identified between SA and HRQOL, anxiety, depression, and severity of injury. Participants with and without impaired SA differed in cognitive HRQOL and leisure activities. Using multiple regression, no direct predictors of SA were identified, although interaction effects were observed. Conclusion:After TBI, lower SA is associated with higher estimates of HRQOL, particularly in the cognitive domain. Although the associations are modest, the assessment of SA should play a role in the interpretation of reported HRQOL after TBI.

Towards effective, efficient and elderly-friendly multimodal interaction

In this paper we present the design and implementation of a multimodal interactive guidance system for the elderly for the use in hospital environments, which combined common design principles of conventional interactive interfaces and ageing specific characteristics. To evaluate the system we have conducted a pilot study with seven elderly persons. The experiment results are overall positive and therefore support our design decisions. On the other hand, they also reveal some context sensitive problems and advise further improvements.

Touch and Speech: Multimodal Interaction for Elderly Persons

This paper reports our work on the development and evaluation of a multimodal interactive guidance system for navigating elderly persons in hospital environments. A list of design guidelines has been proposed and implemented in our system, addressing the needs of designing a multimodal interfaces for elderly persons. Meanwhile, the central component of an interactive system, the dialogue manager, has been developed according to a unified dialogue modelling method, which combines the conventional recursive transition network based generalized dialogue models and the classic agent-based dialogue theory, and supported by a formal language based development toolkit. In order to evaluate the minutely developed multimodal interactive system, the touch and speech input modalities of the current system were evaluated by an elaborated experimental study with altogether 31 elderly. The overall positive results on the effectiveness, efficiency and user satisfaction of both modalities confirm our proposed guidelines, approaches and frameworks on interactive system development. Despite the slightly different results, there is no significant evidence for one preferred modality. Thus, further study of their combination is considered necessary.

Coping strategies in individuals after traumatic brain injury: associations with health-related quality of life

Abstract Purpose: This study investigates coping strategies after traumatic brain injury (TBI) and their associations with health-related quality of life (HRQoL). Methods: Participants were 141 adults followed up 3 months to 15 years after TBI of all severity degrees. Coping was assessed by the Freiburg Questionnaire of Coping with Illness (FQCI) and HRQoL by the Quality of Life after Brain Injury (QOLIBRI) scale and the Short Form-36 Health Survey (SF-36). Coping dimensions were extracted by principal component analysis. Multiple linear regression analysis was used to identify predictors of coping strategies. Results: Two factors for coping after TBI were extracted: Action/Distraction and Trivialisation/Resignation. The Trivialisation/Resignation strategy was negatively correlated with all aspects of HRQoL, while relationships with the Action/Distraction strategy were positive and significant for two domains. These two factors also showed significant associations with anxiety, depression, recovery, cognitive status, mood states and trauma severity. Multiple regression analysis identified recovery status as a predictor for the maladaptive Trivialisation/Resignation strategy. Conclusion: Two coping factors were identified, which were differentially associated with HRQoL. Maladaptive coping strategies play a particularly important role, and less reliance on such strategies is associated with better HRQoL; use of adaptive strategies should correspondingly be fostered. Implications for Rehabilitation This study highlights the relationship of coping strategies and HRQoL after TBI. For the assessment of HRQoL a novel disease-specific instrument was applied, that provides in detail TBI-relevant aspects of well-being and HRQoL. Individuals after TBI use two main sets of coping strategies that are differentially associated with HRQoL (and clinical variables). One is adaptive and the other maladaptive for HRQoL after TBI. Maladaptive and adaptive coping strategies used by the individual should be identified and considered in rehabilitation efforts to improve HRQoL after TBI.

German validation of Quality of Life after Brain Injury (QOLIBRI) assessment and associated factors

The consequences of traumatic brain injury (TBI) for health-related quality of life (HRQoL) are still poorly understood, and no TBI-specific instrument has hitherto been available. This paper describes in detail the psychometrics and validity of the German version of an internationally developed, self-rated HRQoL tool after TBI—the QOLIBRI (Quality of Life after Brain Injury). Factors associated with HRQoL, such as the impact of cognitive status and awareness, are specifically reported. One-hundred seventy-two participants after TBI were recruited from the records of acute clinics, most of whom having a Glasgow Coma Scale (GCS) 24-hour worst score and a Glasgow Outcome Scale (GOSE) score. Participants had severe (24%), moderate (11%) and mild (56%) injuries as assessed on the GCS, 3 months to 15 years post-injury. The QOLIBRI uses 37 items to measure “satisfaction” in the areas of “Cognition”, “Self”, “Daily Life and Autonomy”, and “Social Relationships”, and “feeling bothered” by “Emotions”and “Physical Problems”. The scales meet standard psychometric criteria (α = .84 to .96; intra-class correlation—ICC = .72 to .91). ICCs (0.68 to 0.90) and αs (.83 to .96) were also good in a subgroup of participants with lower cognitive performance. The six-subscale structure of the international sample was reproduced for the German version using confirmatory factor analyses and Rasch analysis. Scale validity was supported by systematic relationships observed between the QOLIBRI and the GOSE, Patient Competency Rating Scale for Neurorehabilitation (PCRS-NR), Hospital Anxiety and Depression Scale (HADS), Profile of Mood States (POMS), Short Form 36 (SF-36), and Satisfaction with Life Scale (SWLS). The German QOLIBRI contains novel information not provided by other currently available measures and has good psychometric criteria. It is potentially useful for clinicians and researchers, in post-acute and rehabilitation studies, on a group and individual level.

Modality Preference in Multimodal Interaction for Elderly Persons

This paper is focusing on two important aspects: on the one hand, it presents our work on designing, developing and implementing a multimodal interactive guidance system for elderly persons to be used in autonomous navigation within complex building; on the other hand, it summaries and compares the data of a series of empirical studies that have been conducted to evaluate the effectiveness, efficiency and user satisfaction of the elderly-centered multimodal interactive system regarding different multimodal input-possibilities such as speech, gesture via touch-screen and the combination of both under simulated conditions. The overall positive results validated our systematically developed and empirically improved design guidelines, foundations, models and frameworks for supporting multimodal interaction for elderly persons.