Head-to-head comparison between the EQ-5D-5L and the EQ-5D-3L in general population health surveys

Background The EQ-5D has been frequently used in national health surveys. This study is a head-to-head comparison to assess how expanding the number of levels from three (EQ-5D-3L) to five in the new EQ-5D-5L version has improved its distribution, discriminatory power, and validity in the general population.