TY - JOUR
T1 - Predicting patients' utilities from quality of life items: An improved scoring system for the UBQ-H
AU - Martin, A. J.
AU - Glasziou, P. P.
AU - Simes, R. J.
AU - Lumley, T.
N1 - Funding Information:
We would like to thank the Department of Cardiology at Royal Prince Alfred Hospital and the Cardiopulmonary Transplant Unit at St Vincent’s Hospital for their assistance in recruiting patients, as well as the National Health and Medical Research Council, the National Heart Foundation and Bristol-Myers-Squibb for providing financial support for the study.
PY - 1998
Y1 - 1998
N2 - The Utility-based Quality of Life - Heart Questionnaire (UBQ-H) is a cardiovascular extension of the Health Measurement Questionnaire. It is a multidimensional instrument that can be scored to yield a utility estimate using the Rosser Index and a classification algorithm developed for the Health Measurement Questionnaire. The aim of this study was to employ a statistical modelling approach to devise an improved scoring system. A sample of 201 cardiovascular patients completed the UBQ-H and assessed the utility of their own health state using standard gamble and time trade-off questions in an interview. Two new scoring methods were devised by regressing the UBQ- H data against patients' self-assessed utilities. The new methods gave utility estimates that correlated with angina/dyspnoea grades, life satisfaction scores and General Health Questionnaire (GHQ) scores. In a second sample of 1,112 cardiovascular patients, the UBQ-H utilities were able to distinguish between patients who had/had not experienced an adverse event (e.g. myocardial infarction) and were responsive to changes in health over time. The new scoring methods were not particularly more sensitive to quality of life effects than the original method based on the Rosser Index. However, they produced significantly lower estimates and more accurately reflected patients' self-assessed utilities.
AB - The Utility-based Quality of Life - Heart Questionnaire (UBQ-H) is a cardiovascular extension of the Health Measurement Questionnaire. It is a multidimensional instrument that can be scored to yield a utility estimate using the Rosser Index and a classification algorithm developed for the Health Measurement Questionnaire. The aim of this study was to employ a statistical modelling approach to devise an improved scoring system. A sample of 201 cardiovascular patients completed the UBQ-H and assessed the utility of their own health state using standard gamble and time trade-off questions in an interview. Two new scoring methods were devised by regressing the UBQ- H data against patients' self-assessed utilities. The new methods gave utility estimates that correlated with angina/dyspnoea grades, life satisfaction scores and General Health Questionnaire (GHQ) scores. In a second sample of 1,112 cardiovascular patients, the UBQ-H utilities were able to distinguish between patients who had/had not experienced an adverse event (e.g. myocardial infarction) and were responsive to changes in health over time. The new scoring methods were not particularly more sensitive to quality of life effects than the original method based on the Rosser Index. However, they produced significantly lower estimates and more accurately reflected patients' self-assessed utilities.
UR - http://www.scopus.com/inward/record.url?scp=0032453273&partnerID=8YFLogxK
U2 - 10.1023/A:1008857131564
DO - 10.1023/A:1008857131564
M3 - Article
C2 - 10097619
AN - SCOPUS:0032453273
SN - 0962-9343
VL - 7
SP - 703
EP - 711
JO - Quality of Life Research
JF - Quality of Life Research
IS - 8
ER -
