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Table 1 Comparison demographics groups among disease groups

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

Characteristic Total JIA SLE JDM p-value
Total number 5,756 4,677 639 440  
Female gender N (%) 4,218 (73.3) 3,368 (79.9) 532 (83.4) 318 (72.3) <0.001
Age at enrollment (years) 11.9 ± 4.8 11.4 ± 4.8 16.0 ± 3.2 11.0 ± 4.4 <0.001
Age onset of symptoms (years) 7.1 ± 4.7 6.5 ± 4.5 12.3 ± 3.2 6.6 ± 3.8 <0.001
Race N (%)      
AA a 551 (9.6) 269 (5.8) 225 (35.2) 57 (13.0) <0.001
AI b 95 (1.7) 73 (1.6) 12 (1.9) 10 (2.3) 0.476
Asian 197 (3.4) 116 (2.5) 69 (10.8) 12 (2.7) <0.001
NH c 36 (0.6) 25 (0.5) 8 (1.3) 3 (0.7) 0.096
White 4,912 (85.3) 4,244 (90.7) 307 (48.0) 361 (82.1) <0.001
Other 222 (3.9) 146 (3.1) 51 (8.0) 25 (5.7) <0.001
Ethnicity (Non-Hispanic) N (%) 5,059 (87.9) 4,214 (90.1) 464 (72.6) 381 (86.6) <0.001
Overall Well-being Score 2.3 ± 2.3 2.3 ± 2.3 2.6 ± 2.5 2.1 ± 2.3 <0.001
PGA 1.6 ± 1.9 1.6 ± 1.9 2.0 ± 1.9 1.6 ± 1.9 <0.001
CHAQ 0.34 ± 0.51 0.35 ± 0.51 0.24 ± 0.46 0.36 ± 0.63 <0.001
ANA N (% positive)d 2,802 (56.2) 2,012 (49.7) 577 (96.5) 213 (62.3) <0.001
  1. aAA – African American or Black, bAI- American Indian or Alaskan Native
  2. cNH- Native Hawaiian or Pacific Islander, dIndicates missing data