Baseline characteristics of SLICC inception cohort patients included in the dataset for SLICC-FI construction (n = 1683).
| Variables | Values |
|---|---|
| Patient age at baseline, yrs, mean (SD) | 35.7 (13.4) |
| Sex | |
| Female | 1493 (88.7) |
| Male | 190 (11.3) |
| Race/ethnicity | |
| White | 834 (49.6) |
| African ancestry | 280 (16.6) |
| Asian | 260 (15.5) |
| Hispanic | 248 (14.7) |
| Other | 61 (3.6) |
| Geographic location | |
| USA | 467 (27.7) |
| Canada | 395 (23.5) |
| Mexico | 197 (11.7) |
| Europe | 461 (27.4) |
| Asia | 163 (9.7) |
| Education | |
| Post-secondary education | 847 (50.3) |
| Missing | 22 (1.3) |
| Cigarette smoking, current | 242 (14.4) |
| SLE disease duration at baseline, mos, median (IQR) | 14.0 (10.7–18.4) |
| SLEDAI-2K at baseline, median (IQR) | 2 (0–6) |
| Baseline SDI = 0 | 1270 (75.5) |
| Medication use | |
| Corticosteroids | 1179 (70.1) |
| Antimalarials | 1149 (68.3) |
| Immunosuppressives | 681 (40.5) |
Values are n (%) unless otherwise specified. IQR: interquartile range; SLICC: Systemic Lupus International Collaborating Clinics; FI: Frailty Index; SLE: systemic lupus erythematosus; SLEDAI-2K: SLE Disease Activity Index 2000; SDI: SLICC/American College of Rheumatology Damage Index.