Please use this identifier to cite or link to this item: http://hdl.handle.net/11434/1184
Title: The high-level mobility assessment tool (HiMAT) for traumatic brain injury. Part 2: content validity and discriminability.
Epworth Authors: Williams, Gavin
Other Authors: Robertson, Val
Greenwood, Ken
Goldie, Patricia
Morris, Meg
Keywords: Brain Injuries
Diagnosis
Rehabilitation
Gait
Movement Disorders
Outcome Assessment
Methods
Reproducibility of Results
Sensitivity and Specificity
High-Level Mobility Assessment Tool
HiMAT
Content Validity
Traumatic Brain Injury
TBI
Internal Consistency
Factor Analysis
Rasch Analysis
Uni-Dimensionality
Discriminability
Therapy Outcomes
Mobility
Rehabilitation, Mental Health and Chronic Pain Clinical Institute, Epworth HealthCare, Victoria, Australia
Department of Physiotherapy , Epworth Healthcare , Victoria , Australia
Issue Date: Sep-2005
Publisher: Taylor & Francis
Citation: Brain Inj. 2005 Sep;19(10):833-43
Abstract: PRIMARY OBJECTIVES: (i) To assess the measurement properties of the high-level mobility assessment tool (HiMAT) for people with traumatic brain injury (TBI), (ii) to measure the extent to which the HiMAT is a uni-dimensional, discriminative hierarchical outcome scale. RESEARCH DESIGN: The content validity was assessed using a three-stage process of investigating internal consistency, factor analysis and Rasch analysis. The uni-dimensionality of the HiMAT items was also tested. Discriminability was investigated by correlating raw and logit scores obtained from Rasch analysis. The study was conducted at a major rehabilitation facility using a convenience sample of 103 adults with TBI. MAIN OUTCOMES AND RESULTS: The internal consistency for the high-level items was very high (Cronbach's alpha = 0.99). Principal axis factoring identified several balance items as belonging to a second factor not related to high-level mobility, hence these items were excluded. Rasch analysis identified several misfitting items, such as walking around a figure of eight and stopping from a run, which were also excluded. Logit scores were used to exclude clustered and, therefore, redundant items. Raw scores correlated very highly (r = 0.98) with logit scores, indicating that raw scores provided good discriminability and were suitable for use by clinicians. CONCLUSION: The HiMAT, which assesses higher-level mobility requirements of people with TBI for return to pre-accident social, leisure and sporting activities, is a uni-dimensional and discriminative scale for quantifying therapy outcomes.
URI: http://hdl.handle.net/11434/1184
DOI: http://www.tandfonline.com/doi/abs/10.1080/02699050500058711
PubMed URL: https://www.ncbi.nlm.nih.gov/pubmed/16175843
ISSN: 0269-9052
1362-301X
Journal Title: Brain Injury
Type: Journal Article
Affiliated Organisations: The University of Newcastle, Callaghan, NSW, Australia
La Trobe University, Bundoora, VIC, Australia
Type of Clinical Study or Trial: Validation Study
Appears in Collections:Neurosciences

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