Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises
Objectives: Poor agreement between preference-based health-related quality-of-life instruments has been widely reported across patient and community-based samples. This study compares index scores generated from contemporaneous EQ-5D (3-level version) and SF-6D (SF-36 version) responses using scorin...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Wiley-Blackwell Publishing, Inc.
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/6011 |
| _version_ | 1848744955596505088 |
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| author | Whitehurst, D. Norman, Richard Brazier, J. Viney, R. |
| author_facet | Whitehurst, D. Norman, Richard Brazier, J. Viney, R. |
| author_sort | Whitehurst, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Objectives: Poor agreement between preference-based health-related quality-of-life instruments has been widely reported across patient and community-based samples. This study compares index scores generated from contemporaneous EQ-5D (3-level version) and SF-6D (SF-36 version) responses using scoring algorithms derived from independently-conducted Australian population-representative discrete choice experiments (DCEs), providing the first comparative analysis of health state valuations using the same method of valuation across the full value sets. Methods: EQ-5D and SF-6D responses from seven patient data sets were transformed into health state valuations using published DCE-derived scoring algorithms. The empirical comparative evaluation consisted of graphical illustration of the location and spread of index scores, reporting of basic descriptive statistics, exploration of between-measure differences in mean index scores, and analysis of agreement. Results: Compared with previously published findings regarding the comparability of “conventional” EQ-5D and SF-6D index scores, health state valuations from the DCE-derived scoring procedures showed that agreement between scores remained “fair” (intraclass correlation coefficient values across the seven data sets ranged from 0.375 to 0.615). Mean SF-6D scores were significantly lower than the respective mean EQ-5D score across all patient groups (mean difference for the whole sample = 0.253).Conclusions: The magnitude of disagreement previously reported between EQ-5D and SF-6D index scores is not ameliorated through the application of DCE-derived value sets; sizeable discrepancies remain. These findings suggest that differences between EQ-5D and SF-6D index scores persist because of their respective descriptive systems. Further research is required to explore the implications of variations in the descriptive systems of preference-based instruments. |
| first_indexed | 2025-11-14T06:09:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-6011 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:09:41Z |
| publishDate | 2014 |
| publisher | Wiley-Blackwell Publishing, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-60112017-09-13T14:42:16Z Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises Whitehurst, D. Norman, Richard Brazier, J. Viney, R. Objectives: Poor agreement between preference-based health-related quality-of-life instruments has been widely reported across patient and community-based samples. This study compares index scores generated from contemporaneous EQ-5D (3-level version) and SF-6D (SF-36 version) responses using scoring algorithms derived from independently-conducted Australian population-representative discrete choice experiments (DCEs), providing the first comparative analysis of health state valuations using the same method of valuation across the full value sets. Methods: EQ-5D and SF-6D responses from seven patient data sets were transformed into health state valuations using published DCE-derived scoring algorithms. The empirical comparative evaluation consisted of graphical illustration of the location and spread of index scores, reporting of basic descriptive statistics, exploration of between-measure differences in mean index scores, and analysis of agreement. Results: Compared with previously published findings regarding the comparability of “conventional” EQ-5D and SF-6D index scores, health state valuations from the DCE-derived scoring procedures showed that agreement between scores remained “fair” (intraclass correlation coefficient values across the seven data sets ranged from 0.375 to 0.615). Mean SF-6D scores were significantly lower than the respective mean EQ-5D score across all patient groups (mean difference for the whole sample = 0.253).Conclusions: The magnitude of disagreement previously reported between EQ-5D and SF-6D index scores is not ameliorated through the application of DCE-derived value sets; sizeable discrepancies remain. These findings suggest that differences between EQ-5D and SF-6D index scores persist because of their respective descriptive systems. Further research is required to explore the implications of variations in the descriptive systems of preference-based instruments. 2014 Journal Article http://hdl.handle.net/20.500.11937/6011 10.1016/j.jval.2014.03.1720 Wiley-Blackwell Publishing, Inc. unknown |
| spellingShingle | Whitehurst, D. Norman, Richard Brazier, J. Viney, R. Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises |
| title | Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises |
| title_full | Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises |
| title_fullStr | Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises |
| title_full_unstemmed | Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises |
| title_short | Comparison of Contemporaneous EQ-5D and SF-6D Responses Using Scoring Algorithms Derived from Similar Valuation Exercises |
| title_sort | comparison of contemporaneous eq-5d and sf-6d responses using scoring algorithms derived from similar valuation exercises |
| url | http://hdl.handle.net/20.500.11937/6011 |