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.
Original language | English (US) |
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Pages (from-to) | 247-254 |
Number of pages | 8 |
Journal | Medical Decision Making |
Volume | 24 |
Issue number | 3 |
DOIs | |
State | Published - May 2004 |
Keywords
- EQ-5D
- Health status
- SF-12
ASJC Scopus subject areas
- Public Health, Environmental and Occupational Health
- Health Informatics
- Health Information Management
- Nursing(all)