Correlation between measures at baseline
NSAA
At baseline, the correlation was strong between NSAA scores and 10MWR grades (Scatterplots of HUI utility vs. NSAA score at baseline, with best-fitting lines. Abbreviations: HUI, Health Utility Index; HUI2, Health Utility Index mark 2; HUI3, Health Utility Index mark 3; NSAA, North Star Ambulatory Assessment