Study population characteristics at the initial visit.
| Characteristics | TA | GCA | p |
|---|---|---|---|
| No. patients | 21 | 31 | |
| Age, yrs | 30 (20–37) | 72 (62–76) | < 0.01 |
| Female | 16 (76) | 23 (74) | 1.00 |
| Glucocorticoid | 15 (71) | 21 (68) | 1.00 |
| DMARD/biologic | 17 (81) | 15 (48) | 0.02 |
| CRP, mg/l | 4.5 (1.9–38.8) | 5.4 (1.1–11.1) | 0.77 |
| ESR, mm/h | 19 (12–34) | 15 (8–26) | 0.54 |
| Active PET | 13 (62) | 28 (90) | 0.02 |
| Clinically active disease | 12 (57) | 17 (55) | 1.00 |
| Disease duration, yrs | 4.8 (1.4–14.9) | 1.4 (0.6–2.7) | < 0.01 |
Values are median (IQR) or n (%) unless otherwise specified. TA: Takayasu arteritis; GCA: giant cell arteritis; IQR: interquartile range; DMARD: disease-modifying antirheumatic drug; ESR: erythrocyte sedimentation rate; CRP: C-reactive protein; PET: positron emission tomography.