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EQ-5D: a plea for accurate nomenclature.
Richard Brooks1, Kristina S Boye2, Bernhard Slaap3
1EuroQol Group Research Foundation, Marten Meesweg 107, 3068, AV, Rotterdam, The Netherlands.
The EQ-5D is a health instrument developed by the EuroQol Group. Despite clear guidelines, its nomenclature is frequently misused in publications, impacting research accuracy.
Area of Science:
- Health Economics
- Quality of Life Measurement
- Patient-Reported Outcomes
Background:
- The EQ-5D (EuroQol 5-Dimension) instrument was developed between 1987-1990.
- Standardized nomenclature was established in 2001 and revised with 22 items.
- Current versions include EQ-5D-3L, EQ-5D-5L, and EQ-5D-Y (youth).
Discussion:
- Published materials continue to inaccurately name the EQ-5D instrument and its components.
- Surveys reveal persistent use of outdated terms like 'the EuroQol instrument'.
- This inconsistency affects systematic reviews and research integrity.
Key Insights:
- The term 'EQ-5D' is not an abbreviation and is the correct general descriptor.
- Established nomenclature for EQ-5D-3L and EQ-5D-5L has been available for a decade.
- Accurate naming is crucial for consistent data interpretation and reporting.
Outlook:
- The EuroQol Group urges users to consult their website for correct nomenclature guidelines.
- Adherence to standard EQ-5D terminology is essential for scientific accuracy.
- Promoting correct usage will enhance the reliability of health-related quality of life research.
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