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https://doi.org/10.1007/s11136-012-0284-6
Title: | Predicting preference-based SF-6D index scores from the SF-8 health survey | Authors: | Wang, P. Fu, A.Z. Wee, H.L. Lee, J. Tai, E.S. Thumboo, J. Luo, N. |
Keywords: | Health preference SF-6D SF-8 Utility |
Issue Date: | Sep-2013 | Citation: | Wang, P., Fu, A.Z., Wee, H.L., Lee, J., Tai, E.S., Thumboo, J., Luo, N. (2013-09). Predicting preference-based SF-6D index scores from the SF-8 health survey. Quality of Life Research 22 (7) : 1675-1683. ScholarBank@NUS Repository. https://doi.org/10.1007/s11136-012-0284-6 | Abstract: | Purpose: To develop and test functions for predicting the preference-based SF-6D index scores from the SF-8 health survey. Methods: This study was a secondary analysis of data collected in a population health survey in which respondents (n = 7,529) completed both the SF-36 and the SF-8 questionnaires. We examined seven ordinary least-square estimators for their performance in predicting SF-6D scores from the SF-8 at both the individual and the group levels. Results: In general, all functions performed similarly well in predicting SF-6D scores, and the predictions at the group level were better than predictions at the individual level. At the individual level, 42.5-51.5 % of prediction errors were smaller than the minimally important difference (MID) of the SF-6D scores, depending on the function specifications, while almost all prediction errors of the tested functions were smaller than the MID of SF-6D at the group level. At both individual and group levels, the tested functions predicted lower than actual scores at the higher end of the SF-6D scale. Conclusions: Our study developed functions to generate preference-based SF-6D index scores from the SF-8 health survey, the first of its kind. Further research is needed to evaluate the performance and validity of the prediction functions. © 2012 Springer Science+Business Media Dordrecht. | Source Title: | Quality of Life Research | URI: | http://scholarbank.nus.edu.sg/handle/10635/108784 | ISSN: | 09629343 | DOI: | 10.1007/s11136-012-0284-6 |
Appears in Collections: | Staff Publications |
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