Table 1 Participant characteristics
Diagnostic group | N | Percent female | Age, years (mean, SD) |
|---|---|---|---|
Rheumatoid arthritis | 342 | 72 | 60.4 (13.5) |
Other inflammatory arthritis | 304 | 47 | 50.1 (14.9) |
Non-inflammatory disorder | 84 | 87 | 56.6 (12.8) |
Auto-immune connective tissue disease | 125 | 91 | 47.8 (16.1) |
Other | 145 | 83 | 59.4 (18.6) |