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A comparison of the performance of the EQ‐5D and SF‐6D for individuals aged ≥ 45 years
Author(s) -
Barton Garry R.,
Sach Tracey H.,
Avery Anthony J.,
Jenkinson Claire,
Doherty Michael,
Whynes David K.,
Muir Kenneth R.
Publication year - 2008
Publication title -
health economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.55
H-Index - 109
eISSN - 1099-1050
pISSN - 1057-9230
DOI - 10.1002/hec.1298
Subject(s) - visual analogue scale , eq 5d , medicine , physical therapy , quality of life (healthcare) , osteoarthritis , rheumatoid arthritis , construct validity , convergent validity , sf 36 , psychometrics , health related quality of life , clinical psychology , alternative medicine , nursing , disease , pathology , internal consistency
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 ≥ 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). Copyright © 2007 John Wiley & Sons, Ltd.