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Quality of Life Research
Gepubliceerd in:

01-09-2012

Mapping the cancer-specific EORTC QLQ-C30 and EORTC QLQ-BR23 to the generic EQ-5D in metastatic breast cancer patients

Auteurs: Eun-ju Kim, Su-Kyoung Ko, Hye-Young Kang

Gepubliceerd in: Quality of Life Research | Uitgave 7/2012

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Abstract

Purpose

To develop a mapping algorithm for a conversion of the EORTC QLQ-C30 and EORTC QLQ BR-23 into the EQ-5D-derived utilities in metastatic breast cancer (MBC) patients.

Methods

We enrolled 199 patients with MBC from four leading Korean hospitals in 2009. EQ-5D utility, cancer-specific (QLQ-C30) and breast cancer-specific quality of life data (QLQ-BR23) and selected clinical and demographic information were collected from the study participants. Ordinary least squares regression models were used to model the EQ-5D using QLQ-C30 and QLQ-BR23 scale scores. To select the best model specification, six different sets of explanatory variables were compared.

Result

Regression analysis with the multiitem scale scores of QLQ-C30 was the best-performing model, explaining for 48.7% of the observed EQ-5D variation. Its mean absolute error between the observed and predicted EQ-5D utilities (0.092) and relative prediction error (2.784%) was among the smallest. Also, this mapping model showed the least systematic errors according to disease severity.

Conclusions

The mapping algorithms developed have good predictive validity, and therefore, they enable researchers to translate cancer-specific health-related quality of life measures to the preference-adjusted health status of MBC patients.
vorige artikel The associations among economic hardship, caregiver psychological distress, disease activity, and health-related quality of life in children with juvenile idiopathic arthritis
volgende artikel Validity, reliability and responsiveness of the EQ-5D in German stroke patients undergoing rehabilitation
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Metagegevens
Titel
Mapping the cancer-specific EORTC QLQ-C30 and EORTC QLQ-BR23 to the generic EQ-5D in metastatic breast cancer patients
Auteurs
Eun-ju Kim
Su-Kyoung Ko
Hye-Young Kang
Publicatiedatum
01-09-2012
Uitgeverij
Springer Netherlands
Gepubliceerd in
Quality of Life Research / Uitgave 7/2012
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-011-0037-y

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