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The European Journal of Health Economics
Erschienen in: The European Journal of Health Economics 2/2013

01.04.2013 | Original Paper

Mapping utility scores from the Barthel index

verfasst von: Billingsley Kaambwa, Lucinda Billingham, Stirling Bryan

Erschienen in: The European Journal of Health Economics | Ausgabe 2/2013

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Abstract

Purpose

It is not always possible to collect utility-based outcome data, like EQ-5D, needed for conducting economic evaluations in populations of older people. Sometimes, information on other non-utility outcome measures may have been collected. This paper examines the possibility of mapping the EQ-5D from a non-utility-based outcome, the Barthel index.

Methods

Data for 1,189 UK intermediate care patients were used. Ordinary least squares (OLS), censored least absolute deviations (CLAD) estimator and multinomial logistic (ML) models were used. The mean absolute error (MAE) and root-mean-squared error (RMSE) were used to estimate the predictive accuracy of eight regression models. Validation of primary models was carried out on random samples of data collected at admission and discharge.

Results

Models where the EQ-5D was entered as a continuous dependent variable and Barthel dimensions used as explanatory variables performed better. CLAD performed best on MAE and OLS on the RMSE, while the ML performed the worst on both measures. The CLAD predicted EQ-5D scores that matched the observed values more closely than the OLS.

Conclusions

It is possible to reasonably predict that the EQ-5D from the Barthel using regression methods and the CLAD model (4) is recommended.
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Metadaten
Titel
Mapping utility scores from the Barthel index
verfasst von
Billingsley Kaambwa
Lucinda Billingham
Stirling Bryan
Publikationsdatum
01.04.2013
Verlag
Springer-Verlag
Erschienen in
The European Journal of Health Economics / Ausgabe 2/2013
Print ISSN: 1618-7598
Elektronische ISSN: 1618-7601
DOI
https://doi.org/10.1007/s10198-011-0364-5

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