Characteristics of the 322 patients with SLE in this study
| Characteristic | SLE with nephritis (n=80) | SLE without nephritis (n=242) |
|---|---|---|
| Age at blood draw, mean years (SD) | 43.20 (12.86) | 46.36 (13.18) |
| Disease duration, mean years (SD) | 16.25 (10.11) | 10.69 (8.02) |
| ACR classification criteria for SLE, n (%) | ||
| ANA positivity | 76 (95.0) | 229 (94.6) |
| Malar rash | 43 (53.8) | 110 (45.5) |
| Discoid rash | 3 (3.8) | 7 (2.9) |
| Oral ulcers | 19 (23.8) | 80 (33.1) |
| Photosensitivity | 59 (73.8) | 201 (83.1) |
| Arthritis | 57 (71.3) | 186 (76.9) |
| Serositis | 25 (31.3) | 69 (28.5) |
| Neurological disorder | 11 (13.8) | 19 (7.9) |
| Haematological disorder | 64 (80.0) | 151 (62.4) |
| Immunological disorder | 67 (83.8) | 148 (61.2) |
| SLE-related autoantibodies, n (%) | ||
| Anti-dsDNA | 56 (70.0) | 98 (40.5) |
| Anti-SSA/Ro | 24 (31.6*) | 62 (25.6*) |
| Anti-SSB/La | 10 (13.3*) | 23 (9.5*) |
| Anti-Sm | 14 (18.7*) | 23 (9.5*) |
| Anti-RNP | 18 (24.0*) | 38 (15.7*) |
*Percentages are not based on all 322 participants due to missing values.
ACR, American College of Rheumatology; ds, double-stranded; RNP, ribonucleoprotein; SSA, SjÖgren's syndrome related antigen A; SSB, SjÖgren's syndrome related antigen B.