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Table 3 Comparison of the number of autoimmune disease (family history) among disease groups

From: Familial autoimmunity in the childhood arthritis and rheumatology research alliance registry

Outcome Level Disease group P-value
JIA SLE JDM  
(N = 4,677) (N = 639) (N = 440)
# of autoimmune diseases in family      
 Mean ± SD -- 0.4 ± 0.8 0.4 ± 0.7 0.3 ± 0.6 <0.001
 Median   0 0 0  
 (Range)   (0 – 14) (0 – 5) (0 – 4)  
# of autoimmune diseases in family 0 3189 (66.2 %) 435 (68.1 %) 350 (80.8 %) <0.001
  1-2 1377 (29.4 %) 192 (30.1 %) 82 (18.6 %)  
  3+ 111 (2.4 %) 12 (1.9 %) 8 (1.8 %)