1. Measurement properties of the EQ-5D-5L compared to the EQ-5D-3L across eight patient groups: a multi-country study

    Janssen MF, Pickard AS, Golicki D, Gudex C, Niewada M, Scalone L, Swinburn P, Busschbach J
    Qual Life Res 2013 Sep;22(7):1717-1727
    Published : 01-09-2013  

  2. Development and preliminary testing of the new five-level version of EQ-5D (EQ-5D-5L)

    Herdman M, Gudex C, Lloyd A, Janssen M, Kind P, Parkin D, Bonsel G, Badia X
    Qual Life Res 2011 Dec;20(10):1727-1736
    Published : 01-12-2011