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Frequency of autoimmune diseases in the studied families
| Number of relatives with history of autoimmune disease | Families |
|---|---|
| 0 | 40 (52.6%) |
| 1 | 19 (25%) |
| 2 | 14 (18.4%) |
| 3 | 2 (2.6%) |
| 4 | 1 (1.3%) |
Value are number (%) of families, classified by number of parents with history of autoimmune disease. Overall, 47.4% of the families of JIA patients had at least 1 relative with an autoimmune disorder
