Demographic data (n=25 in each group)
| Mean | SD | Range | |
| Patients with RA | |||
| Age (years) | 58.6 | 16.6 | 20–82 |
| Disease duration (years) | 16.7 | 10.8 | 1–42 |
| Disability (HAQ) | 2.16 | 0.36 | 1.5–2.75 |
| Controls | |||
| Age (years) | 53.4 | 9.5 | 36–75 |
| Health professionals | |||
| Rheumatology experience (years) | 7.64 | 4.7 | 1–17 |
| HAQ experience (years) | 5.5 | 3.6 | 0–13 |