The department has a long tradition of measuring health-related quality of life, of which the EQ-5D is our current focus.
Prof. van Busschbach chairs the international EuroQol Group, which owns this questionnaire.
Over the past 5 years, the EuroQol EQ-5D has been used in an average of 1171 articles per year, and received 27,747 citations (Web of Science, 2018). The EuroQol EQ-5D has had major impact on both patients and society, and it has become the dominant quality of life assessment for health economic evaluation in health care. In addition to EQ-5D research, our department is involved in the development of disease-specific patient reported outcomes.