Median age (and range) in years of study patients by Carstairs group at enrolment and median disease duration of RA patients
| 1 and 2 | 3–5 | 6 and 7 | |
|---|---|---|---|
| Number (%) | 22 (12) | 117 (62) | 49 (26) |
| Age (y) | 56 (33–78) | 57 (22–77) | 58 (25–80) |
| Disease duration (y) | 8 (1–30) | 7.5 (1–30) | 5 (1–30) |