Table 4.
Demographics of patients with systemic lupus erythematosus with osteonecrosis of the femoral head
| Patients (n = 49) | G19 | G4 | G6 | G34 | G42 | G2 | |
| Age (yr) | 34.1 ± 11.2 | 36 | 34 | 45 | 36 | 33 | 44 |
| Sex (female/male) | 45/4 | Female | Female | Female | Female | Female | Female |
| Disease duration of SLE (mo) | 61.8 ± 49.8 | 48 | 48 | 204 | 168 | 84 | 72 |
| Disease duration of ONFH (mo) | 14.2 ± 18.8 | 1 | 2 | 2 | 24 | 1 | 48 |
| Fever, n (%) | 4 (8.2) | N | N | Y | Y | N | N |
| Skin rashes, n (%) | 28 (57.1) | Y | Y | N | N | N | Y |
| Photosensitivity, n (%) | 8 (16.3) | N | Y | N | N | N | N |
| Raynaud phenomenon, n (%) | 11 (22.4) | N | N | Y | N | Y | N |
| Oral ulcer, n (%) | 5 (10.2) | N | N | Y | N | N | N |
| Arthritis, n (%) | 37 (75.5) | Y | N | Y | Y | Y | Y |
| Polyserositis, n (%) | 12 (24.5) | N | Y | N | N | N | N |
| Interstitial Pneumonia, n (%) | 8 (16.3) | N | N | N | N | N | N |
| Renal disorder, n (%) | 21 (42.9) | N | N | N | N | N | Y |
| Neurological disorder, n (%) | 6 (12.2) | N | N | N | N | N | N |
| Anemia, n (%) | 27 (55.1) | N | Y | Y | N | Y | N |
| Thrombocytopenia, n (%) | 6 (12.2) | N | N | N | N | Y | N |
| Leukopenia, n (%) | 8 (16.3) | N | N | Y | N | N | N |
| dsDNA, n (%) | 28 (57.1) | N | N | Y | N | N | N |
| AnuA, n (%) | 25 (51.0) | N | N | Y | N | N | N |
| Smith, n (%) | 19 (38.8) | N | N | N | N | N | N |
| AHA, n (%) | 16 (32.7) | N | N | Y | N | N | N |
| rRNP, n (%) | 8 (16.3) | N | N | Y | N | N | N |
| ESR (mm/h), n (%) | 46 (83.7) | 21 | 16 | 34 | 76 | 24 | 59 |
| Low C3, n (%) | 11 (22.4) | N | N | N | N | N | N |
| Low C4, n (%) | 10 (20.4) | N | N | N | N | N | N |
| 24-hour urine protein n (%) | 32 (65.3) | N | N | N | N | N | N |
| SLEDAI | 1-21 (8.9 ± 4.1) | 6 | 4 | 8 | 5 | 5 | 10 |
AHA: Antihistone antibody; AnuA: Antinucleosome antibody; C3: Complement 3; C4: Complement 4; dsDNA: Anti-double-stranded DNA antibody; ESR: Erythrocyte sedimentation rate; rRNP: Antiribosome ribonucleoprotein antibody; SLE: Systemic lupus erythematosus; SLEDAI: Systemic lupus erythematosus disease activity index; Smith: Anti-Smith antibody; Y: Yes or positive; N: No or negative. Except where otherwise indicated, values are expressed as the mean ± standard deviation.