Abstract
OBJECTIVE: To investigate the psychometric properties of a cardiovascular extension of an existing utility-based quality of life questionnaire (Health Measurement Questionnaire). The new instrument has been named the Utility Based Quality of life--Heart questionnaire, or UBQ-H. DESIGN: Explored the test-retest reliability, construct validity, and responsiveness of the UBQ-H. PATIENTS: A sample of 322 patients attending cardiac outpatient clinics were recruited from two large metropolitan teaching hospitals. A second sample of 1112 patients taking part in the LIPID trial was also used to investigate the validity and responsiveness of the UBQ-H. RESULTS: Ninety per cent of all UBQ-H questionnaires were returned, and item completion rates were high (median of less than 1% missing or N/A answers). Cronbach's alpha measure of internal consistency for the scales ranged between 0.79- 0.91, and each item was also most strongly correlated with its hypothesised domain than alternative domains. The intra-class test- retest reliability of the UBQ-H scales ranged from 0.65 to 0.81 for patients with stable health. Results supported the construct validity of the UBQ-H. The UBQ-H was significantly correlated with other information on quality of life (for example, General Health Questionnaire) as anticipated. The instrument was able to distinguish between contrasted groups of patients (for example, with versus without symptoms of dyspnoea, prior myocardial infarction versus none, etc), and was responsive to changes in health associated with adverse events requiring hospitalisation. CONCLUSIONS: The modifications made to the Health Measurement Questionnaire has resulted in an assessment designed for cardiovascular patients that has proved to be both reliable and valid.
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- Andresen E. M., Patrick D. L., Carter W. B., Malmgren J. A. Comparing the performance of health status measures for healthy older adults. J Am Geriatr Soc. 1995 Sep;43(9):1030–1034. doi: 10.1111/j.1532-5415.1995.tb05569.x. [DOI] [PubMed] [Google Scholar]
- Design features and baseline characteristics of the LIPID (Long-Term Intervention with Pravastatin in Ischemic Disease) Study: a randomized trial in patients with previous acute myocardial infarction and/or unstable angina pectoris. Am J Cardiol. 1995 Sep 1;76(7):474–479. doi: 10.1016/s0002-9149(99)80133-7. [DOI] [PubMed] [Google Scholar]
- Glasziou P. P., Bromwich S., Simes R. J. Quality of life six months after myocardial infarction treated with thrombolytic therapy. AUS-TASK Group. Australian arm of International tPA/SK Mortality Trial. Med J Aust. 1994 Nov 7;161(9):532–536. doi: 10.5694/j.1326-5377.1994.tb127596.x. [DOI] [PubMed] [Google Scholar]
- Hunt S. M., McEwen J., McKenna S. P. Measuring health status: a new tool for clinicians and epidemiologists. J R Coll Gen Pract. 1985 Apr;35(273):185–188. [PMC free article] [PubMed] [Google Scholar]
- Kind P., Gudex C. M. Measuring health status in the community: a comparison of methods. J Epidemiol Community Health. 1994 Feb;48(1):86–91. doi: 10.1136/jech.48.1.86. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Magee T. R., Scott D. J., Dunkley A., St Johnston J., Campbell W. B., Baird R. N., Horrocks M. Quality of life following surgery for abdominal aortic aneurysm. Br J Surg. 1992 Oct;79(10):1014–1016. doi: 10.1002/bjs.1800791009. [DOI] [PubMed] [Google Scholar]
- McHorney C. A., Ware J. E., Jr, Lu J. F., Sherbourne C. D. The MOS 36-item Short-Form Health Survey (SF-36): III. Tests of data quality, scaling assumptions, and reliability across diverse patient groups. Med Care. 1994 Jan;32(1):40–66. doi: 10.1097/00005650-199401000-00004. [DOI] [PubMed] [Google Scholar]
- Moinpour C. M., Feigl P., Metch B., Hayden K. A., Meyskens F. L., Jr, Crowley J. Quality of life end points in cancer clinical trials: review and recommendations. J Natl Cancer Inst. 1989 Apr 5;81(7):485–495. doi: 10.1093/jnci/81.7.485. [DOI] [PubMed] [Google Scholar]
- NEUGARTEN B. L., HAVIGHURST R. J., TOBIN S. S. The measurement of life satisfaction. J Gerontol. 1961 Apr;16:134–143. doi: 10.1093/geronj/16.2.134. [DOI] [PubMed] [Google Scholar]
- Norman-Taylor F. H., Palmer C. R., Villar R. N. Quality-of-life improvement compared after hip and knee replacement. J Bone Joint Surg Br. 1996 Jan;78(1):74–77. [PubMed] [Google Scholar]
- Rawles J., Light J., Watt M. Quality of life in the first 100 days after suspected acute myocardial infarction--a suitable trial endpoint? J Epidemiol Community Health. 1992 Dec;46(6):612–616. doi: 10.1136/jech.46.6.612. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rosser R., Kind P. A scale of valuations of states of illness: is there a social consensus? Int J Epidemiol. 1978 Dec;7(4):347–358. doi: 10.1093/ije/7.4.347. [DOI] [PubMed] [Google Scholar]
- Torrance G. W., Feeny D. Utilities and quality-adjusted life years. Int J Technol Assess Health Care. 1989;5(4):559–575. doi: 10.1017/s0266462300008461. [DOI] [PubMed] [Google Scholar]
- Torrance G. W., Furlong W., Feeny D., Boyle M. Multi-attribute preference functions. Health Utilities Index. Pharmacoeconomics. 1995 Jun;7(6):503–520. doi: 10.2165/00019053-199507060-00005. [DOI] [PubMed] [Google Scholar]
- Veit C. T., Rose B. J., Ware J. E., Jr Effects of physical and mental health on health-state preferences. Med Care. 1982 Apr;20(4):386–401. doi: 10.1097/00005650-198204000-00004. [DOI] [PubMed] [Google Scholar]
- Ware J. E., Jr, Sherbourne C. D. The MOS 36-item short-form health survey (SF-36). I. Conceptual framework and item selection. Med Care. 1992 Jun;30(6):473–483. [PubMed] [Google Scholar]
