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Table 1 Patient characteristics

From: Proteomic analysis identifies subgroups of patients with active systemic lupus erythematosus

Total (n = 223)

No (%)/median (IQR)

Age, years (n = 197)

40 (30, 51)

Female

198 (88.8)

Caucasian (n = 222)

132 (59.2)

Current smoker

27 (12.1)

Disease duration, years (n = 218)

10 (6, 17)

SLICC damage index (n = 206)

0 (0,1)

1997 ACR criteria at baseline (n = 203)

 

 Number fulfilling ≥ 4 criteria

186 (83.4)

 Malar rash

122 (54.7)

 Photosensitivity

115 (51.6)

 Discoid rash

41 (18.4)

 Oral ulcers

136 (61)

 Arthritis

192 (86.1)

 Serositis

69 (30.9)

 CNS

22 (9.9)

 Renal disease

81 (36.3)

 Haematologic disorder

115 (51.6)

 Immunologic disorder

151 (67.7)

 Positive ANA

185 (83)

Disease activity

 

 SLEDAI score (n = 212)

8 (4.5, 14)

 SLICC damage index (n = 206)

0 (0,1)

BILAG-2004 score at baseline

 

 Constitutional

19 (9.3)

 Mucocutaneous

107 (51.2)

 Neuropsychiatric

23 (11.2)

 Musculoskeletal

95 (45.5)

 Cardiorespiratory

35 (17)

 Gastrointestinal

11 (5.4)

 Ophthalmic

13 (6.4)

 Renal

79 (37.4)

 Haematological

9 (4.4)

 Baseline creatinine, umol/l (n = 162)

66 (57, 78)

 BMI, kg/m2 (n = 171)

26.4 (22.9, 31.3)

Medications

 

 Current steroid use

136 (61)

 Usual daily OCS dose (mg/day)

10 (5, 14)

 Current anti-malarial use

110 (49.3)

 Anti-malarial use ever

202 (90.6)

 Methotrexate

9 (4)

 Azathioprine

11 (4.9)

 Mycophenolate mofetil

77 (34.5)

 Calcineurin inhibitor

3(1.3)

Serology

 

 Ro (n = 215)

76 (35.3)

 Ro52 (n = 215)

42 (18.8)

 Ro60 (n = 192)

70 (31.4)

 La (n = 195)

19 (8.5)

 dsDNA (n = 215)

87 (39)

 dsDNA titre, IU/l

38.5 (13.9, 246.1)

 U1-RNP (n = 192)

56 (25.1)

 Low C3/C4 (n = 212)

100 (44.8)

  1. IQR interquartile range, dsDNA Double stranded DNA, CNS Central Nervous System, ANA Anti-nuclear antibody, SLEDAI Systemic Lupus Erythematosus Disease Activity Index, SLICC Systemic Lupus International Collaborating Clinics, BILAG British Isles Lupus Assessment Group, BMI Body Mass Index, OCS Oral corticosteroids, ACR American College of Rheumatology.U1-RNP U1-Ribonuclear Protein, MTX Methotrexate, AZA Azathioprine, MMF Mycophenolate Mofetil, CyA Cyclosporin A, TAC Tacrolimus