Comparison of Utility Values Measured by Different Instruments / 中国卫生经济

ABSTRACT

Objective: To compare utility values measured by different instruments. Methods: Different instruments were used to measure utility values in 350 patients who were diagnosed as age-related macular degeneration at the same time. The median of utility values measured by different instruments was regarded as relative standard utility value to process comparison, analysis of variance, correlation analysis and curve estimation. Results: Most differences and correlations among utility values measured by different instruments were significant, as well as equations estimated from relative standard utility value and utility values measured by different instruments, but the degree of fitting was not high. Conclusion: The utility values of the same subject measured by different instruments are quite different. The results of the study could provide correction reference to the utility value measured by single instrument in the absence of absolute standard.