Risk of site-specific OA in patients with PsA compared with patients in the general population and patients with psoriasis.
| Cases Before Index Date, N | Prevalence, % | Cases After Index Date, n | PY | Incidence Rate Per 10,000 PY | (95% CI) | |
|---|---|---|---|---|---|---|
| Hand or wrist OA | ||||||
| General population | 162 | 0.6 | 133 | 146568 | 9.1 | (7.5–10.6) |
| Psoriasis | 184 | 0.7 | 143 | 145353 | 9.8 | (8.2–11.5) |
| PsA | 132 | 1.9 | 53 | 38506 | 13.8 | (10.1–17.5) |
| Hip or knee OA | ||||||
| General population | 733 | 2.7 | 602 | 141767 | 42.5 | (39.1–45.9) |
| Psoriasis | 862 | 3.2 | 583 | 140086 | 41.6 | (38.2–45.0) |
| PsA | 318 | 4.7 | 184 | 37082 | 49.6 | (42.5–56.8) |
| Spine OAa | ||||||
| General population | 1115 | 4.1 | 277 | 140303 | 19.7 | (17.4–22.1) |
| Psoriasis | 1277 | 4.7 | 299 | 138163 | 21.6 | (19.2–24.1) |
| PsA | 410 | 6.0 | 99 | 36382 | 27.2 | (21.9–32.6) |
↵aIncluding spondylosis. OA: osteoarthritis; PsA: psoriatic arthritis; PY: person-years.