A Quantitative Exploration of the Performance of a Potential “Health and Well-Being” Visual Analog Scale (EQ-HWB VAS) for the EQ-HWB-9

This study provides the first evidence of the measurement properties of a "health and wellbeing" VAS for EQ-HWB, demonstrating its validity. Further research is recommended in different languages and countries to inform decisions about the addition of a VAS to the EQ-HWB.