Clinical differences between uveitis associated with PsA and SA
| Characteristics | Number (%) of patients | ||
|---|---|---|---|
| PsA (n=16) | SA (n=89) | ||
| Age at diagnosis (y) (range) | 39 (19–64) | 33 (5–56) | p<0.001 |
| Time between diagnosis of arthritis and uveitis (y) (range) | 9.7 (0–29) | ?† | |
| Female | 5 (31) | 39 (44) | p=NS |
| HLA B-27 (+)1-150 | 6 (67) | 56 (89) | p=NS |
| Insidious onset | 3 (19) | 3 (3) | p=0.064 |
| Continuous inflammation‡ | 5 (31) | 5 (6) | p=0.006 |
| Symmetry | |||
| Unilateral | 4 (25) | 46 (52) | p=NS |
| Bilateral | 6 (37.5) | 6 (7) | p=0.001 |
| Alternating | 6 (37.5) | 37 (42) | p=NS |
| Location | |||
| Anterior | 9 (56) | 74 (83) | p=NS |
| Posterior§ | 7 (44) | 15 (17) | p<0.05 |
↵1-150 The total number of patients with SA who underwent HLA-B27 typing was 63, and for those with PsA, nine. †Data not available.‡Indicates active inflammation longer than six months. §Includes patients with either exclusively posterior inflammation or relatively equal anterior and posterior inflammation. NS = not significant.