Influence of demographic and serologic factors in BILAG A or 2B flare.
| Factor at Baseline | No A or 2B, % | Later A or 2B, % | p | OR (95% CI) |
|---|---|---|---|---|
| African American | 35 | 49 | 0.0397 | 1.77 (1.04, 3.01) |
| Low C3 | 18 | 36 | 0.0019 | 2.57 (1.45, 4.55) |
| Low C4 | 17 | 36 | 0.0009 | 2.75 (1.54, 4.90) |
| Anti-dsDNA-positive | 21 | 37 | 0.0070 | 2.24 (1.28, 3.92) |
BILAG: British Isles Lupus Assessment Group index.