Table 4.
EQ-5D and SF-6D index scores and subjectively perceived disease activities.
| Current symptoms | Yes | No | Flares in the previous year | Yes | No | |
|---|---|---|---|---|---|---|
| EQ-5D scores | Mean (95% CI) |
0.69∗
(0.66–0.72) |
0.88 (0.86–0.89) |
0.75∗
(0.71–0.76) |
0.82 | |
| Median | 0.76 | 1.0 | 0.80 | 0.85 | ||
|
| ||||||
| SF-6D scores |
Mean (95% CI) |
0.71∗
(0.69–0.72) |
0.81 (0.8–0.82) |
0.74∗
(0.71–0.76) |
0.78 (0.77–0.79) |
|
| Median | 0.70 | 0.85 | 0.75 | 0.80 | ||
|
| ||||||
| AUC (95% CI) | ||||||
| EQ-5D | 0.76 (0.72–0.79) |
0.61 (0.56–0.66) |
||||
| SF-6D | 0.72 (0.68–0.76) |
0.6 (0.54–0.65) |
||||
Mean (95% confidence interval) and median utility indices with and without symptoms/flares in the previous year; significance of the differences between symptoms/no symptoms and flares/no flares: ∗ P < 0.001 (t-test and Mann-Whitney test).
AUC: area under the ROC curve dependent on the information regarding current symptoms or flares in the previous year (95% confidence interval).