Skip to main content
main-content
Top

Tip

Swipe om te navigeren naar een ander artikel

01-11-2010 | Uitgave 9/2010 Open Access

Quality of Life Research 9/2010

Application of the health assessment questionnaire disability index to various rheumatic diseases

Tijdschrift:
Quality of Life Research > Uitgave 9/2010
Auteurs:
Maaike M. van Groen, Peter M. ten Klooster, Erik Taal, Mart A. F. J. van de Laar, Cees A. W. Glas

Abstract

Purpose

To investigate whether the Stanford Health Assessment Questionnaire Disability Index (HAQ-DI) can serve as a generic instrument for measuring disability across different rheumatic diseases and to propose a scoring method based on item response theory (IRT) modeling to support this goal.

Methods

The HAQ-DI was administered to a cross-sectional sample of patients with confirmed rheumatoid arthritis (n = 619), osteoarthritis (n = 125), or gout (n = 102). The results were analyzed using the generalized partial credit model as an IRT model.

Results

It was found that 4 out of 8 item categories of the HAQ-DI displayed substantial differential item functioning (DIF) over the three diseases. Further, it was shown that this DIF could be modeled using an IRT model with disease-specific item parameters, which produces measures that are comparable for the three diseases.

Conclusion

Although the HAQ-DI partially functioned differently in the three disease groups, the measurement regarding the disability level of the patients can be made comparable using IRT methods.

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.

Literatuur
Over dit artikel

Andere artikelen Uitgave 9/2010

Quality of Life Research 9/2010 Naar de uitgave