Incidence rate of AAU, psoriasis and IBD in patients with AS and controls
| Patients with AS | Controls | Incidence rate ratio* (95% CI) | |||
|---|---|---|---|---|---|
| EAM, n | Incidence rate† | EAM, n | Incidence rate† | ||
| AAU | 203 | 8.91 | 80 | 0.42 | 21.1 (16.3 to 27.3) |
| Psoriasis | 90 | 3.36 | 341 | 1.81 | 1.9 (1.5 to 2.4) |
| IBD | 62 | 2.36 | 84 | 0.44 | 5.3 (3.8 to 7.4) |
*The incidence rate ratio is calculated as the incidence rate for patients divided by the incidence rate for controls.
†Number of patients or controls with EAM/1000 person-years.
AAU, acute anterior uveitis; AS, ankylosing spondylitis; EAM, extra-articular manifestation; IBD, inflammatory bowel disease.