|
Citation
|
Whyte J, Giacino JT, Heinemann AW, Bodien Y, Hart T, Sherer M, Whiteneck GG, Mellick D, Hammond FM, Semik P, Rosenbaum A, Richardson RN. Arch. Phys. Med. Rehabil. 2020; ePub(ePub): ePub. |
|
Abstract
|
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, DRS, 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: 184 individuals 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 MEASURE(S): IRT 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 in comparison to 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.
Language: en |