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Diagnosis at baseline visit, Childhood Arthritis & Rheumatology Research Alliance (CARRA) registry population (as of February 2012)
| Diagnosis | N (%) |
| Juvenile idiopathic arthritis | 4510 (72%) |
| Pediatric systemic lupus erythematosus | 618 (10%) |
| Juvenile dermatomyositis | 433 (7%) |
| Localized scleroderma | 236 (4%) |
| Juvenile primary fibromyalgia | 122 (2%) |
| Vasculitis | 117 (2%) |
| Mixed connective tissue disease | 112 (2%) |
| Sarcoidosis | 38 (1%) |
| Systemic sclerosis | 36 (1%) |
