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Quality of Life Research

Erschienen in:

01.09.2013

Predicting preference-based SF-6D index scores from the SF-8 health survey

verfasst von: P. Wang, A. Z. Fu, H. L. Wee, J. Lee, E. S. Tai, J. Thumboo, N. Luo

Erschienen in: Quality of Life Research | Ausgabe 7/2013

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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.

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Titel: Predicting preference-based SF-6D index scores from the SF-8 health survey
verfasst von: P. Wang
A. Z. Fu
H. L. Wee
J. Lee
E. S. Tai
J. Thumboo
N. Luo
Publikationsdatum: 01.09.2013
Verlag: Springer Netherlands
Erschienen in: Quality of Life Research / Ausgabe 7/2013
Print ISSN: 0962-9343
Elektronische ISSN: 1573-2649
DOI: https://doi.org/10.1007/s11136-012-0284-6

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Abstract

Purpose

Methods

Results

Conclusions

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