BackgroundIn order to assess and plan for changing healthcare needs, the lack of available information regarding temporal changes in the health-related quality of life of a population must be addressed.
AimThis paper aims to describe such changes over 5 years in a general population.
Design of studyLongitudinal postal questionnaire study.
Setting
UK general practice.
MethodThis was a longitudinal postal questionnaire study in two general practice populations, using the generic instrument EQ-5D to measure health-related quality of life. Individuals were included if they responded to three postal surveys in 1999, 2001, and 2004 and there were three consecutive values of EQ-5Dindex available between 1999 and 2004.
ResultsA total of 2498 subjects were included in the study. After adjustment for potential confounders (including ageing), health-related quality of life declined significantly over the observation period. The change in EQ-5Dindex was from 0.79 to 0.74 and for EQ-5Dvas 76.8 to 73.3 (P for both trends <0.001).
ConclusionHealth-related quality of life deteriorated in these populations over 5 years. In an era of improvements in mortality, this has important implications for the use of health-related quality of life data in healthcare planning and resource allocation.Keywords chronic disease; EQ-5D; health related quality of life; temporal trend.
INTRODUCTIONTo assess the changing health needs of a population and to evaluate the extent to which patients' healthrelated quality of life (HRQoL) benefits from health care, it is generally agreed that a systematic structured approach is needed.1 For this purpose, generic HRQoL measures such as EQ-5D have been developed.
2In contrast to disease-specific instruments, these can compare quality of life in populations, regardless of disease.EQ-5D has been used in cross-sectional studies in both general populations 3-5 and those with specific morbidities.6-9 So far, however, there has been no report of any long-term longitudinal study in the UK, although two British population surveys described follow-up of 1 year.1,10 A recent study from Sweden reported a deterioration over 4 years in HRQoL of women of all ages, and in younger men.
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METHODThe aim of this study was to compare the temporal changes in health-related quality of life in three postal surveys. This study formed part of a larger long-term epidemiological study looking at a