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Do EQ-5D-Y-3L value sets have common properties, and how do they compare to EQ-5D-5L value sets?
Bram Roudijk1,2, Tianxin Pan3, Jan Abel Olsen4
1EuroQol Research Foundation, Marten Meesweg 107, Rotterdam, 3068 AV, The Netherlands. Roudijk@euroqol.org.
Summary
This study compares EQ-5D-Y-3L value sets across 11 countries, finding both differences and similarities in health valuation. Children
Area of Science:
- Health Economics
- Psychometrics
- Patient-Reported Outcomes
Background:
- Numerous EQ-5D-Y-3L value sets are available globally.
- This presents an opportunity to compare international differences and similarities.
Purpose of the Study:
- To compare EQ-5D-Y-3L value sets across 11 countries.
- To assess similarities between EQ-5D-Y-3L and EQ-5D-5L value sets.
Main Methods:
- Reviewed 11 EQ-5D-Y-3L value set publications.
- Assessed similarities using kernel density plots and other characteristics.
- Compared EQ-5D-Y-3L and EQ-5D-5L value sets from the same countries.
Main Results:
- All studies used the same discrete choice experiment (DCE) design.
- Analytical strategies varied; values for state 33333 ranged from -0.691 to 0.289.
- Pain/discomfort consistently received the largest weight; self-care the smallest in most studies.
- European and Asian value sets showed similarities, as did Australian and Brazilian sets to Asian sets.
Conclusions:
- Substantial differences exist in EQ-5D-Y-3L value set scales, but striking similarities in weighting (e.g., pain/discomfort).
- EQ-5D-Y-3L values suggest lower willingness to trade life years for quality of life in children compared to adults (EQ-5D-5L).
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