Skip to main content
main-content
Top

Tip

Swipe om te navigeren naar een ander artikel

01-12-2009 | Research | Uitgave 1/2009 Open Access

Journal of Foot and Ankle Research 1/2009

A Rasch Analysis of the Manchester Foot Pain and Disability Index

Tijdschrift:
Journal of Foot and Ankle Research > Uitgave 1/2009
Auteurs:
Sara Muller, Edward Roddy
Belangrijke opmerkingen

Electronic supplementary material

The online version of this article (doi:10.​1186/​1757-1146-2-29) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests.

Authors' contributions

SM conceived and conducted the analysis and helped in the drafting of the manuscript. ER helped in the drafting of the manuscript. All authors approved the final manuscript.

Abstract

Background

There is currently no interval-level measure of foot-related disability and this has hampered research in this area. The Manchester Foot Pain and Disability Index (FPDI) could potentially fill this gap.

Objective

To assess the fit of the three subscales (function, pain, appearance) of the FPDI to the Rasch unidimensional measurement model in order to form interval-level scores.

Methods

A two-stage postal survey at a general practice in the UK collected data from 149 adults aged 50 years and over with foot pain. The 17 FPDI items, in three subscales, were assessed for their fit to the Rasch model. Checks were carried out for differential item functioning by age and gender.

Results

The function and pain items fit the Rasch model and interval-level scores can be constructed. There were too few people without extreme scores on the appearance subscale to allow fit to the Rasch model to be tested.

Conclusion

The items from the FPDI function and pain subscales can be used to obtain interval level scores for these factors for use in future research studies in older adults. Further work is needed to establish the interval nature of these subscale scores in more diverse populations and to establish the measurement properties of these interval-level scores.

Onze productaanbevelingen

BSL Podotherapeut Totaal

Binnen de bundel kunt u gebruik maken van boeken, tijdschriften, e-learnings, web-tv's en uitlegvideo's. BSL Podotherapeut Totaal is overal toegankelijk; via uw PC, tablet of smartphone.

Extra materiaal
Literatuur
Over dit artikel

Andere artikelen Uitgave 1/2009

Journal of Foot and Ankle Research 1/2009 Naar de uitgave