1881658 EQ-5D VAS EuroQol 5-dimensional visual analog scale 8 1881662 EQ5D-VAS EQ5D-visual analogue scale 2 1881660 EQ5D-VAS EuroQol-5D & Visual Analogue Scale 2 1881661 EQ5D-VAS European Quality of Life 5 Dimensions visual analogue scale 1 1881659 EQ5D-VAS EuroQoL 5-Dimension Questionnaire Visual Analogue Scale 1