Abstract：
PURPOSE:To develop an algorithm for mapping the Functional Assessment of Cancer Therapy-Breast (FACT-B) to the 5-level EuroQoL Group's 5-dimension questionnaire (EQ-5D-5L) utility index. METHODS:A survey of 238 breast cancer patients in Singapore was conducted. Models using various regression methods with or without recognizing the upper boundary of utility values at 1 were fitted to predict the EQ-5D-5L utility index based on the five subscale scores of the FACT-B. Data from a follow-up survey of these patients were used to validate the results. RESULTS:A model that maps the physical, emotional, functional well-being and the breast cancer concerns subscales of the FACT-B to the EQ-5D-5L utility index was derived. The social well-being subscale was not associated to the utility index. Although theoretical assumptions may not be valid, ordinary least square outperformed other regression methods. The mean predicted utility index within each performance status level at follow-up deviated from the observed mean less than the minimally important difference of EQ-5D for cancer patients. CONCLUSIONS:The mapping algorithm converts the FACT-B to the EQ-5D utility index. This enables oncologists, clinical researchers and policy makers to obtain a quantitative utility summary of a patient's health status when only the FACT-B is assessed.
journal_name
Health Qual Life Outcomesjournal_title
Health and quality of life outcomesauthors
Cheung YB,Luo N,Ng R,Lee CFdoi
10.1186/s12955-014-0180-6subject
Has Abstractpub_date
2014-12-12 00:00:00pages
180issn
1477-7525pii
s12955-014-0180-6journal_volume
12pub_type
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journal_title：Health and quality of life outcomes
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更新日期：2003-03-24 00:00:00
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