Archives of physical medicine and rehabilitation · 2019
Rasch Analysis of Postconcussive Symptoms: Development of Crosswalks and the Brain Injury Symptom Scale.
СтатьяМногоцентровое исследованиеНаблюдательное исследованиеПоддержка правительства СШАНазвание и аннотация: Перевод в очереди
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Vos Leia, Whiteneck Gale G, Ngan Esther, Leon-Novelo Luis, Sherer Mark
Аннотация
OBJECTIVE: The first aim of this study was to develop a Rasch-based crosswalk between 2 postconcussive symptom measures, the Neurobehavioral Symptom Inventory (NSI) and the Rivermead Postconcussive Symptom Questionnaire (RPQ). The second goal was to utilize Rasch analysis to formulate a new proposed scale containing the best theoretical and psychometric items.
DESIGN: Prospective cohort observational study.
SETTING: Three acute inpatient rehabilitation hospitals in the United States.
PARTICIPANTS: Community-dwelling persons (N=497) who were previously hospitalized and were diagnosed with mild to severe traumatic brain injury. Participants were (1) 18-64 years old; (2) could give informed consent; (3) able to complete study measures in English; (4) did not have an interfering medical or psychiatric condition.
INTERVENTIONS: Not applicable.
MAIN OUTCOME MEASURES: NSI, RPQ.
RESULTS: Rasch analysis revealed 4 subdimensions across the 2 scales: cognitive, affective, physical, and visual. Crosswalk tables were generated for the first 3. Visual items were too few to generate a crosswalk. Iterative Rasch analysis produced a new scale with items rated from none to severe including the best items in each of these dimensions.
CONCLUSIONS: The NSI and RPQ have considerable overlap and measure the same overarching constructs. Crosswalk tables may be helpful for clinicians and researchers to convert scores from 1 measure to the other. A more psychometrically sound scale, the Brain Injury Symptom Scale, composed of items from the NSI and RPQ, is proposed and will need further validation.
DESIGN: Prospective cohort observational study.
SETTING: Three acute inpatient rehabilitation hospitals in the United States.
PARTICIPANTS: Community-dwelling persons (N=497) who were previously hospitalized and were diagnosed with mild to severe traumatic brain injury. Participants were (1) 18-64 years old; (2) could give informed consent; (3) able to complete study measures in English; (4) did not have an interfering medical or psychiatric condition.
INTERVENTIONS: Not applicable.
MAIN OUTCOME MEASURES: NSI, RPQ.
RESULTS: Rasch analysis revealed 4 subdimensions across the 2 scales: cognitive, affective, physical, and visual. Crosswalk tables were generated for the first 3. Visual items were too few to generate a crosswalk. Iterative Rasch analysis produced a new scale with items rated from none to severe including the best items in each of these dimensions.
CONCLUSIONS: The NSI and RPQ have considerable overlap and measure the same overarching constructs. Crosswalk tables may be helpful for clinicians and researchers to convert scores from 1 measure to the other. A more psychometrically sound scale, the Brain Injury Symptom Scale, composed of items from the NSI and RPQ, is proposed and will need further validation.