Distribution of patients fulfilling ILAR and CASPAR criteria for psoriatic arthritis in the CARRA database.
| JIA Category in CARRA Database | ILAR-JPsA (% ILAR final)* | CASPAR-JPsA (% final CASPAR)** |
|---|---|---|
| Enthesitis-related arthritis | 10 (3.1) | 13 (4.9) |
| Juvenile ankylosing spondylitis | 1 (0.4) | |
| Oligoarthritis extended | 3 (0.9) | 2 (0.7) |
| Oligoarthritis persistent | 19 (6.0) | 13 (4.9) |
| Polyarthritis RF-negative | 25 (7.9) | 15 (5.6) |
| Polyarthritis RF-positive | 1 (0.3) | 0 (0) |
| CARRA-JPsA | 256 (80.5) | 216 (80.6) |
| Systemic JIA | 3 (1.1) | |
| Undifferentiated arthritis | 4 (1.3) | 4 (1.5) |
| Other | 1 (0.4) | |
| Total | 318 (100) | 268 (100) |
↵* Children fulfilling ILAR criteria for JPsA in the CARRA JIA database.
↵** Children fulfilling CASPAR criteria for PsA in the CARRA JIA database. ILAR: International League of Associations for Rheumatology; CASPAR: Classification criteria for Psoriatic Arthritis; CARRA: Childhood Arthritis and Rheumatology Research Alliance; JIA: juvenile idiopathic arthritis; JPsA: juvenile psoriatic arthritis; RF: rheumatoid factor.