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Brain Injury Functional Outcome Measure (BI-FOM): A Single Instrument Capturing the Range of Recovery in Moderate-Severe Traumatic Brain Injury
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1 2021
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Source: Arch Phys Med Rehabil. 102(1):87-96
[PDF-336.51 KB]
Details:
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Alternative Title:Arch Phys Med Rehabil
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Personal Author:
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Description:Objective:
To develop a measure of global functioning after moderate-severe TBI with similar measurement precision but a longer measurement range than the FIM.
Design:
Phase 1: retrospective analysis of 5 data sets containing FIM, Disability Rating Scale, and other assessment items to identify candidate items for extending the measurement range of the FIM; Phase 2: prospective administration of 49 candidate items from phase 1, with Rasch analysis to identify a unidimensional scale with an extended range.
Setting:
Six TBI Model System rehabilitation hospitals.
Participants:
Individuals (NZ184) with moderate-severe injury recruited during inpatient rehabilitation or at 1-year telephone follow-up. Interventions: Participants were administered the 49 assessment items in person or via telephone.
Main Outcome Measures:
Item response theory parameters: item monotonicity, infit/outfit statistics, and Factor 1 variance.
Results:
After collapsing misordered rating categories and removing misfitting items, we derived the Brain Injury Functional Outcome Measure (BI-FOM), a 31-item assessment instrument with high reliability, greatly extended measurement range, and improved unidimensionality compared with the FIM.
Conclusions:
The BI-FOM improves global measurement of function after moderate-severe brain injury. Its high precision, relative lack of floor and ceiling effects, and feasibility for telephone follow-up, if replicated in an independent sample, are substantial advantages.
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Source:
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Pubmed ID:33022273
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Pubmed Central ID:PMC9255898
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Document Type:
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Funding:
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Volume:102
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Issue:1
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