The European journal of health economics : HEPAC : health economics in prevention and care
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In 2019, the EuroQol Group developed a 'beta' 5-level version of EQ-5D-Y (Y-5L) by increasing the number of descriptive levels to five for each health dimension, as compared to the standard 3-level EQ-5D-Y (Y-3L). ⋯ Both the Y-3L and Y-5L descriptive systems showed acceptable patient-caregiver agreement and test-retest reliability when used to assess the HRQoL of children and adolescents with haematological malignancies, including in younger patients.