Table 3

The disease composition of the control group meeting different classification criteria

ACR-997 (n=14)SLICC-2012 (n=30)EULAR/ACR-2019 (n=33)SLERPI (n=41)
Primary Sjogren’s syndrome4 (28.6)9 (30.0)8 (24.2)15 (36.6)
Undifferentiated connective tissue disease4 (28.6)7 (23.3)7 (21.2)9 (22.0)
Rheumatoid arthritis1 (7.1)3 (10.0)10 (30.3)5 (12.2)
Idiopathic inflammatory myopathies4 (28.6)3 (10.0)3 (9.1)4 (9.8)
Systemic sclerosis03 (10.0)2 (6.1)3 (7.3)
Mixed connective tissue disease1 (7.1)2 (6.7)2 (6.1)2 (4.9)
Primary systemic vasculitis01 (3.3)01 (2.4)
Behcet’s disease02 (6.7)1 (3.0)0
Pneumonia0002 (4.9)
  • Values are n (%).

  • ACR, American College of Rheumatology; EULAR, European League Against Rheumatism; SLERPI, Systemic Lupus Erythematosus Risk Probability Index; SLICC, Systemic Lupus International Collaborating Clinics.