Fig. 2

Mean (SD) A HUI utility B NSAA and C 6MWT score by visit. Note: Whiskers represent 95% confidence intervals. Abbreviations: 6MWT: 6-min walk test; HUI, Health Utility Index; HUI2, Health Utility Index mark 2; HUI3, Health Utility Index mark 3; NSAA, North Star Ambulatory Assessment; SD, standard deviation