Mapping the SF-12 to the EuroQol EQ-5D Index in a National US Sample

Peter Franks, Erica I. Lubetkin, Marthe R. Gold, Daniel J. Tancredi and Haomiao Jia
Additional contact information
Peter Franks: Center for Health Services Research in Primary Care, University of California, Davis
Erica I. Lubetkin: Department of Community Health and Social Medicine, City University of New York Medical School, New York, New York
Marthe R. Gold: Department of Community Health and Social Medicine, City University of New York Medical School, New York, New York
Daniel J. Tancredi: Center for Health Services Research in Primary Care, University of California, Davis
Haomiao Jia: Department of Community Health and Social Medicine, City University of New York Medical School, New York, New York

Medical Decision Making, 2004, vol. 24, issue 3, 247-254

Abstract: Background . Preference scores for the Medical Outcomes Study (MOS) SF-12 would enable its use in cost-effectiveness analyses. Previous mapping studies of MOS instruments to preference-based instruments have not examined performance in national samples. Participants . 15,000 adults in the 2000 Medical Expenditure Panel Survey annual survey including the SF-12 and EQ-5D Index. Methods . Regression of the EQ-5D Index scores onto the physical and mental component summary scores of the SF-12, testing 2nd-4th degree polynomial and spline models, including and excluding sociodemographics. Results . A 2nd degree polynomial model explained 63% of the variance in EQ-5D scores, with robust internal and external validation. More complex models explained minimally additional variance. Compared with EQ-5D valuations, prediction models overestimated the lowest health states (6% of the population). Conclusions . The mapped SF-12 yields usable preference-scaled scores, with some caution for the lowest health states.

Keywords: health status; SF-12; EQ-5D (search for similar items in EconPapers)
Date: 2004
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:sae:medema:v:24:y:2004:i:3:p:247-254

DOI: 10.1177/0272989X04265477

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