Baseline characteristics of the SLE patients eligible for analysis (n = 99).
| Mean age, yrs (range) | 34.2 ± 1.1 (11–58) |
| Sex, F/M (%) | 85/14 (86/14) |
| Race, no. (%) | |
| Caucasian | 13 (14) |
| African American | 22 (24) |
| Hispanic | 31 (34) |
| Asian | 26 (28) |
| Unknown | 7 |
| Renal biopsy according to ISN/RPS class, no. (%) | |
| II | 6 (5) |
| III | 27 (22) |
| IV | 49 (40) |
| V | 39 (32) |
| VI | 2 (2) |
| Total | 123 |
| Inconclusive | 2 |
SLE: systemic lupus erythematosus; ISN/RPS: International Society of Nephrology/Renal Pathology Society.