Validity and Reliability of the Assessment of Quality of Life (AQoL)-8D Multi-Attribute Utility Instrument

Objective The purpose of this paper was to report tests of the validity and reliability of a new instrument, the Assessment of Quality of Life (AQoL)-8D, which was constructed to improve the evaluation of health services that have an impact upon the psychosocial aspects of the quality of life. Metho...

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Published in:The patient : patient-centered outcomes research Vol. 7; no. 1; pp. 85 - 96
Main Authors: Richardson, Jeff, Iezzi, Angelo, Khan, Munir A., Maxwell, Aimee
Format: Journal Article
Language:English
Published: Cham Springer International Publishing 01.03.2014
Springer Nature B.V
Subjects:
Activities of Daily Living
Adaptation, Psychological
Adolescent
Adult
Aged
Female
Happiness
Health Administration
Health Economics
Health Status
Humans
Hypothesis testing
Interpersonal Relations
Male
Medicine
Medicine & Public Health
Mental Health
Mental health care
Middle Aged
Original
Original Research Article
Pain
Pharmacoeconomics and Health Outcomes
Public Health
Quality of Life
Quality of Life Research
Reproducibility of Results
Self Care
Studies
Surveys and Questionnaires
Validity
Young Adult
Health Utility Index
Predictive Validity
Satisfaction With Life Scale
Content Validity
Convergent Validity
ISSN:1178-1653, 1178-1661
Online Access:Get full text
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Summary:Objective The purpose of this paper was to report tests of the validity and reliability of a new instrument, the Assessment of Quality of Life (AQoL)-8D, which was constructed to improve the evaluation of health services that have an impact upon the psychosocial aspects of the quality of life. Methods Australian and US data from a large multi-instrument comparison survey were used to conduct tests of convergent, predictive and content validity using as comparators five other multi-attribute utility (MAU) instruments—the EQ-5D, SF-6D, Health Utilities Index (HUI) 3, 15D and the Quality of Well-Being (QWB)—as well as four non-utility instruments—the SF-36 and three measures of subjective well-being (SWB). A separate three part Australian survey was used to assess test–retest reliability. Results Results indicate that AQoL-8D correlates more highly with both the SWB instruments and the psychosocial dimensions of the SF-36, and that it is similar to the other MAU instruments in terms of its convergent and predictive validity. The second Australian survey demonstrated high test–retest reliability. Conclusions The results indicate that the AQoL-8D is a reliable and valid instrument which offers an alternative to the MAU instruments presently used in economic evaluation studies, and one which is particularly suitable when psychosocial elements of health are of importance.
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ISSN:1178-1653
1178-1661
DOI:10.1007/s40271-013-0036-x