Characteristics of patients with rheumatoid arthritis (RA), psoriatic arthritis (PsA), and ankylosing spondylitis (AS) taking anti-TNF treatment.
| Characteristic | All Patients, mean (SE) | RA, mean (SE) | PsA, mean (SE) | AS, mean (SE) | p |
|---|---|---|---|---|---|
| Number | 297 | 206 | 57 | 34 | |
| Age, yrs | 55.0 (0.61) | 57.6 (0.70) | 49.9 (1.25) | 44.4 (1.61) | < 0.0001 |
| Disease duration, yrs | 12.9 (0.46) | 12.8 (0.54) | 13.0 (1.07) | 13.3 (1.43) | 0.9417 |
| Treatment duration, yrs | 2.57 (0.09) | 2.69 (0.11) | 2.52 (0.21) | 1.80 (0.24) | 0.0099 |
| Sex, % F | 70.8 | 79.9 | 58.7 | 32.6 | < 0.0001 |
| Number | 297 | 206 | 57 | 34 | |
| Baseline HAQ-DI | 1.37 (0.04) | 1.47 (0.05) | 1.18 (0.08) | 1.06 (0.10) | 0.0002 |
| Number | 255 | 175 | 51 | 29 | |
| Baseline HAQ-PS | 1.85 (0.04) | 1.91 (0.06) | 1.79 (0.09) | 1.84 (1.12) | 0.8671 |
TNF: tumor necrosis factor; SE: standard error; HAQ: Health Assessment Questionnaire; DI: Disability Index; PS: Pain Score.