Table 1.

Demographics and clinical characteristics.

Clinical Features/IndicesMean (± SD), or n (%)
Age at presentation, yrs42.5 ± 13.0
Age at diagnosis, yrs33.2 ± 12.9
Duration of illness, yrs9.3 ± 8.8
Race (%)
  African American94/167 (53.5)
  Caucasian42/167 (30.2)
  Hispanic21/167 (12.5)
  Asian10/167 (6.0)
Sex (%)
  Female156/167 (93.5)
  Male11/167 (6.5)
Disease activity and damage
  SLEDAI, mean6.2 ± 5.7
  SDI, mean2.0 ± 2.0
SF-36 subscales (0–100)
  Physical function55.4 ± 30.4
  Role-physical38.2 ± 41.3
  Bodily pain51.5 ± 25.9
  General health43.1 + 20.6
  Vitality45.1 ± 22.7
  Social functioning59.6 ± 27.1
  Role emotional57.7 ± 45.45
  Mental health68.1 ± 21.21
  MCS51.9 ± 8.9
  PCS35.6 ± 10.8
EQ-5D index (0–1)0.72 ± 0.19
EQ-5D VAS (0–100)68.7 ± 20.46
SF-6D (0.296–1)0.64 ± 0.14
  • SLEDAI: Systemic Lupus Erythematosus Disease Activity Index; SDI: Systemic Lupus International Collaborating Clinics (SLICC) Damage Index; SF-36: Medical Outcomes Study Short-Form 36; MCS/PCS: Mental/Physical Component Scores; EQ-SD: EuroQol; SF-6D: Short Form-6D; VAS: Visual analog scale.