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Measurement properties of the Spinal Cord Injury-Functional Index (SCI-FI) short forms.


ABSTRACT: OBJECTIVE:To evaluate the psychometric properties of the Spinal Cord Injury-Functional Index (SCI-FI) short forms (basic mobility, self-care, fine motor, ambulation, manual wheelchair, and power wheelchair) based on internal consistency; correlations between short forms banks, full item bank forms, and a 10-item computer adaptive test version; magnitude of ceiling and floor effects; and test information functions. DESIGN:Cross-sectional cohort study. SETTING:Six rehabilitation hospitals in the United States. PARTICIPANTS:Individuals with traumatic spinal cord injury (N=855) recruited from 6 national Spinal Cord Injury Model Systems facilities. INTERVENTIONS:Not applicable. MAIN OUTCOME MEASURES:SCI-FI full item bank, 10-item computer adaptive test, and parallel short form scores. RESULTS:The SCI-FI short forms (with separate versions for individuals with paraplegia and tetraplegia) demonstrate very good internal consistency, group-level reliability, excellent correlations between short forms and scores based on the total item bank, and minimal ceiling and floor effects (except ceiling effects for persons with paraplegia on self-care, fine motor, and power wheelchair ability and floor effects for persons with tetraplegia on self-care, fine motor, and manual wheelchair ability). The test information functions are acceptable across the range of scores where most persons in the sample performed. CONCLUSIONS:Clinicians and researchers should consider the SCI-FI short forms when computer adaptive testing is not feasible.

SUBMITTER: Heinemann AW 

PROVIDER: S-EPMC4382921 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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Measurement properties of the Spinal Cord Injury-Functional Index (SCI-FI) short forms.

Heinemann Allen W AW   Dijkers Marcel P MP   Ni Pengsheng P   Tulsky David S DS   Jette Alan A  

Archives of physical medicine and rehabilitation 20140303 7


<h4>Objective</h4>To evaluate the psychometric properties of the Spinal Cord Injury-Functional Index (SCI-FI) short forms (basic mobility, self-care, fine motor, ambulation, manual wheelchair, and power wheelchair) based on internal consistency; correlations between short forms banks, full item bank forms, and a 10-item computer adaptive test version; magnitude of ceiling and floor effects; and test information functions.<h4>Design</h4>Cross-sectional cohort study.<h4>Setting</h4>Six rehabilitat  ...[more]

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