The discriminative ability of the SF-6D to distinguish between patients according to prespecified lifestyle factors and comorbidities, i.e., smoking, self-reported fatigue, carotid plaque, and self-reported depression.
| Variable | Yes | No | p | Effect Size |
|---|---|---|---|---|
| Current smoker, n | 47 | 134 | ||
| SF-6D, mean (SD) | 0.55 (0.13) | 0.62 (0.12) | 0.003 | 0.58 |
| Carotid plaque, n | 47 | 144 | ||
| SF-6D, mean (SD) | 0.57 (0.13) | 0.61 (0.12) | 0.027 | 0.33 |
| Fatigue, n | 139 | 42 | ||
| SF-6D, mean (SD) | 0.59 (0.12) | 0.65 (0.12) | 0.006 | 0.50 |
| Depression | ||||
| Including amitriptyline, n | 39 | 140 | ||
| SF-6D, mean (SD) | 0.53 (0.11) | 0.62 (0.12) | < 0.001 | 0.75 |
| Excluding amitriptyline, n | 31 | 148 | ||
| SF-6D, mean (SD) | 0.53 (0.11) | 0.62 (0.12) | < 0.001 | 0.75 |