Measuring neurobehavioral functioning in people with traumatic brain injury: Rasch analysis of Neurobehavioral Functioning Inventory

Objective: To examine internal construct validity of the Neurobehavioral Functioning Inventory (NFI) by applying Rasch analysis. Setting: An outpatient rehabilitation program trial in New Zealand employing a goal-setting intervention in people with traumatic brain injury (TBI). Participants: One hundred eight people (mean age = 46 years; 73% male) between 6 months and 5 years post-TBI. Design: Rasch analysis of the NFI (Partial Credit Model). Results: Three NFI subscales were not unidimensional and at least 4 items in each subscale had disordered response categories. Two items showed differential item functioning by age, 1 item by educational attainment, and 2 items were found to misfit the overall construct. These items were excluded from the total score calculation. The revised scale fit the Rasch model and supported the internal construct validity of the NFI. Conclusions: Current scoring of the NFI subscales for people with TBI in New Zealand does not meet the requirements of the Rasch model. The revised version of NFI can improve the interpretation of scores but should be further tested with people with TBI in other settings

Support Workers' Experiences of Work Stress in Long-term Care Settings: A Qualitative Study

Background: Support-workers' performance and well-being are challenged by increasingly high workloads and poor working conditions, leading to high levels of occupational stress. Aims: To explore the experiences of work stress for support-workers in New Zealand residential facilities. Design: An Interpretive Descriptive study. Methods: Data from ten (n = 10) support-workers were collected between December 2013 and June 2014, using semi-structured in-depth face-to-face interviews. Thematic analysis was used to identify key themes that captured participant reports of their experiences. Results: Work stress was conceptualized by participants as being an everyday experience of having too much to deal with and feeling under constant pressure. It appeared to be a complex and fluid experience representing an inherent, dynamic tension between reasons to be a caregiver and the burden of caregiving. Participants highlighted a range of influencing factors (including lack of recognition, person and work context, and coping strategies), which may account for that fluidity. Conclusion: The findings extend current knowledge about support-workers' work stress by identifying the challenges relating to the lack of recognition of their role and expertize, the unintended consequences of person-centered care and the challenges faced by migrant support-workers

Measuring neurobehavioral functioning in people with traumatic brain injury: Rasch analysis of Neurobehavioral Functioning Inventory.

Objective: To examine internal construct validity of the Neurobehavioral Functioning Inventory (NFI) by applying Rasch analysis. Setting: An outpatient rehabilitation program trial in New Zealand employing a goal-setting intervention in people with traumatic brain injury (TBI). Participants: One hundred eight people (mean age = 46 years; 73% male) between 6 months and 5 years post-TBI. Design: Rasch analysis of the NFI (Partial Credit Model). Results: Three NFI subscales were not unidimensional and at least 4 items in each subscale had disordered response categories. Two items showed differential item functioning by age, 1 item by educational attainment, and 2 items were found to misfit the overall construct. These items were excluded from the total score calculation. The revised scale fit the Rasch model and supported the internal construct validity of the NFI. Conclusions: Current scoring of the NFI subscales for people with TBI in New Zealand does not meet the requirements of the Rasch model. The revised version of NFI can improve the interpretation of scores but should be further tested with people with TBI in other settings