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Health and Quality of Life Outcomes
Published in: Health and Quality of Life Outcomes 1/2006

Open Access 01-12-2006 | Research

Parsimonious and efficient assessment of health-related quality of life in osteoarthritis research: validation of the Assessment of Quality of Life (AQoL) instrument

Authors: Kathryn Whitfield, Rachelle Buchbinder, Leonie Segal, Richard H Osborne

Published in: Health and Quality of Life Outcomes | Issue 1/2006

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Abstract

Background

The Assessment of Quality of Life (AQoL) utility instrument was psychometrically developed for the general population. This study aimed to explore its potential as an osteoarthritis (OA) outcome measure.

Methods

WOMAC, Lequesne index, SF-36, Visual analogue scales and the AQoL were administered to 222 people with OA. The ability of each questionnaire to detect differences between groups was based on (i) self-rated health (SRH) and, (ii) differences between people on an orthopedic waiting list (WL) vs people with OA in the community (C). Comparisons included effect size, relative efficiency and receiver operator characteristic curves.

Results

All instruments detected differences between groups; however no one instrument exhibited superior efficiency. The AQoL demonstrated strong psychometric properties.

Conclusion

The AQoL has equivalent performance to comparator questionnaires commonly used in OA research and would be a useful adjunct to well-established disease specific scales. The AQoL has important advantages; brevity (12 items), facilitates comparisons between disease groups, and delivers a utility score that can be used in health economic evaluations.
Appendix
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Metadata
Title
Parsimonious and efficient assessment of health-related quality of life in osteoarthritis research: validation of the Assessment of Quality of Life (AQoL) instrument
Authors
Kathryn Whitfield
Rachelle Buchbinder
Leonie Segal
Richard H Osborne
Publication date
01-12-2006
Publisher
BioMed Central
Published in
Health and Quality of Life Outcomes / Issue 1/2006
Electronic ISSN: 1477-7525
DOI
https://doi.org/10.1186/1477-7525-4-19

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