Demographics at study entry of patients with RA, AS, PsA, SLE, SSc and age-matched and gender-matched individuals from the general population free of systemic rheumatic disease
| RA | AS | PsA | SLE | SSc | ||||||
| Patients | General population | Patients | General population | Patients | General population | Patients | General population | Patients | General population | |
| N | 42 735 | 213 675 | 9707 | 48 535 | 13 779 | 68 895 | 10 440 | 52 200 | 2277 | 11 385 |
| Female gender N (%) | 33 641 (79) | 168 205 (79) | 4163 (43) | 20 815 (43) | 7565 (55) | 37 825 (55) | 9315 (89) | 46 575 (89) | 1998 (88) | 9990 (88) |
| Median (IQR) age in years | 64 (54–73) | 47 (38–56) | 54 (45–64) | 53 (42–64) | 59 (49–68) | |||||
AS, ankylosing Spondylitis; N, number; PsA, psoriatic arthritis; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; SSc, systemic sclerosis.