Table 3. Renal laboratory tests post-index.
eGFR: estimated glomerular filtration rate; LN: lupus nephritis; SD: standard deviation; uPCR: urinary protein/creatinine ratio.
| Laboratory tests | LN (N=2310) | SLE without LN (N=2310) | p-value |
| Proteinuria concentration (mg/dL) | |||
| Patients with proteinuria concentration test, n (%) | 866 (37.5) | 540 (23.4) | <0.001 |
| Average per-patient counts of proteinuria concentration tests on separate dates, mean (SD) | 2.8 (3.3) | 1.8 (1.4) | <0.001 |
| Average overall level of proteinuria concentration during the post-index period, mean (SD) | 94.9 (274.1) | 19.3 (113.4) | <0.001 |
| uPCR (mg/g) | |||
| Patients with uPCR, n (%) | 637 (27.6) | 272 (11.8) | <0.001 |
| Average per-patient counts of uPCR on separate dates, mean (SD) | 2.5 (2.3) | 1.7 (1.4) | <0.001 |
| Average overall uPCR during the post-index period, mean (SD) | 634.7 (1176.8) | 120.2 (322.4) | <0.001 |
| eGFR (mL/min/1.73 m2) | |||
| Patients with eGFR test, n (%) | 1228 (53.2) | 1240 (53.7) | 0.711 |
| Average per-patient counts of eGFR tests on separate dates, mean (SD) | 3.8 (3.8) | 2.7 (2.2) | <0.001 |
| Average overall eGFR level during the post-index period, mean (SD) | 57.1 (28.7) | 82.3 (18.3) | <0.001 |