Measuring disability and function in individuals with multiple sclerosis: Psychometric properties of the abbreviated late-life function and disability instrument

Robert W. Motl, Erin M. Snook, Jessica L. Gosney, Edward McAuley

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The measurement of functional limitations and disability in individuals with multiplesclerosis (MS) has been plagued by definitional ambiguity and measurement limitations.The abbreviated Late Life-Function and Disability Inventory (LL-FDI) was recentlydeveloped based on accepted definitions of functional limitations and disability, and hasbeen supported as having strong measurement properties in samples of older adults. Thisstudy examined the structural and external aspects of score validity for the LL-FDI inindividuals with MS. Individuals with MS completed the LL-FDI and three measures ofphysical activity. Structural aspects of score validity for the LL-FDI were establishedusing confirmatory factor analysis (CFA). The CFA supported the existence of twofactors of personal and social aspects of disability for the disability frequency andlimitations subscales of the LL-FDI, and three factors of upper extremity function, basiclower extremity function, and advanced lower extremity function for the functionallimitations subscale of the LL-FDI. External aspects of score validity for the LL-FDIwere established based on expected differences in mean scores between individuals withrelapsing-remitting MS and primary and secondary progressive MS and examination ofthe pattern of correlations between mean scores with the measures of physical activity.Our results support the structural and external aspects of score validity for the LL-FDI inindividuals with MS, and we recommend that future researchers use this scale whenmeasuring functional limitations and disability in this population.

Original languageEnglish (US)
Title of host publicationPsychological Tests and Testing Research Trends
PublisherNova Science Publishers, Inc.
Pages251-264
Number of pages14
ISBN (Print)9781600215698
StatePublished - Dec 1 2007

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Psychometrics
Multiple Sclerosis
Equipment and Supplies
Statistical Factor Analysis
Upper Extremity
Lower Extremity
Extremities
Research Personnel
Population

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Motl, R. W., Snook, E. M., Gosney, J. L., & McAuley, E. (2007). Measuring disability and function in individuals with multiple sclerosis: Psychometric properties of the abbreviated late-life function and disability instrument. In Psychological Tests and Testing Research Trends (pp. 251-264). Nova Science Publishers, Inc..

Measuring disability and function in individuals with multiple sclerosis : Psychometric properties of the abbreviated late-life function and disability instrument. / Motl, Robert W.; Snook, Erin M.; Gosney, Jessica L.; McAuley, Edward.

Psychological Tests and Testing Research Trends. Nova Science Publishers, Inc., 2007. p. 251-264.

Research output: Chapter in Book/Report/Conference proceedingChapter

Motl, RW, Snook, EM, Gosney, JL & McAuley, E 2007, Measuring disability and function in individuals with multiple sclerosis: Psychometric properties of the abbreviated late-life function and disability instrument. in Psychological Tests and Testing Research Trends. Nova Science Publishers, Inc., pp. 251-264.
Motl RW, Snook EM, Gosney JL, McAuley E. Measuring disability and function in individuals with multiple sclerosis: Psychometric properties of the abbreviated late-life function and disability instrument. In Psychological Tests and Testing Research Trends. Nova Science Publishers, Inc. 2007. p. 251-264
Motl, Robert W. ; Snook, Erin M. ; Gosney, Jessica L. ; McAuley, Edward. / Measuring disability and function in individuals with multiple sclerosis : Psychometric properties of the abbreviated late-life function and disability instrument. Psychological Tests and Testing Research Trends. Nova Science Publishers, Inc., 2007. pp. 251-264
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