Table 1 Patient characteristics
Southern Sweden | Mid Sweden | |
|---|---|---|
Number of patients | 164 | 358 |
Women | 143 (87) | 320 (89) |
Age at diagnosis (years) | 46.0 ± 13.2 | 31.8 ± 13.6 |
Age at nephritis onset (years) | 33.8 ± 14.6 | 33.6 ± 14.9 |
SLE duration (years) | 16.0 ± 9.7 | 17.7 ± 11.0 |
Number of SLE criteria | 5.9 (4 to 10) | 5.8 (4 to 10) |
Malar rash | 95 (58) | 190 (53) |
Discoid rash | 61 (37) | 59 (16) |
Photosensitivity | 116 (71) | 195 (54) |
Oral ulcer | 42 (26) | 114 (32) |
Arthritis | 132 (80) | 299 (84) |
Serositis | 88 (54) | 158 (44) |
Nephritis | 43 (26) | 153 (43) |
Neurological disorder | 15 (9) | 45 (13) |
Hematological disorder | 87 (53) | 241 (61) |
Immunological disorder | 121 (74) | 265 (74) |
Antinuclear antibodies | 164 (100) | 356 (99) |