A comparison of the performance of the EQ-5D and SF-6D for individuals aged >or= 45 years.
We sought to compare the performance of the EQ-5D and SF-6D with regard to the criteria of practicality, convergent validity, and construct validity, the level of agreement between the two measures was also assessed. Responses from 1865 individuals aged >or= 45 years in one general practice were analysed. Of these, 93.1% completed the EQ-5D, compared with 86.4% for the SF-6D, where individuals who were older, female, of a lower occupational skill level, from an area of lower deprivation, or used prescribed medication were significantly less likely to complete the SF-6D. The performance of both measures was comparable with regard to both convergent and construct validities, as both the EQ-5D and SF-6D scores were closely related to scores on the EuroQol visual analogue scale (VAS) (p<0.001) and able to discriminate between people who did and did not take: (i) analgesics and (ii) other prescribed medication. Despite EQ-5D and SF-6D scores being highly correlated (p<0.001), individuals who were healthier (according to the VAS) had higher mean scores on the EQ-5D (p<0.001), whereas less healthy individuals had higher mean scores on the SF-6D (individuals with knee pain, osteoarthritis, back pain, rheumatoid arthritis, and hip pain had significantly lower mean scores on the EQ-5D, p<0.001).
Barton
Garry R
GR
School of Economics, University of Nottingham, Nottingham, UK. g.barton@uea.ac.uk.
Sach
Tracey H
TH
Avery
Anthony J
AJ
Jenkinson
Claire
C
Doherty
Michael
M
Whynes
David K
DK
Muir
Kenneth R
KR
D000203:Activities of Daily Living; D000367:Age Factors; D000368:Aged; D005260:Female; D015438:Health Behavior; D006304:Health Status; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain; D011788:Quality of Life; D015203:Reproducibility of Results; D012737:Sex Factors; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires