Table 4.
Comparison of P-C4d levels in SLE patients with or without aPL antibodies.
| P-C4d Median (IQR) * | p-Value (vs. aPL−) | |
|---|---|---|
| aPL− (n = 132) | 0.52 (0.13–0.91) | |
| aPL+ (n = 48) ** | 1.18 (0.25–4.55) | 0.002 |
| aCL+ alone (n = 14) | 0.48 (0.20–1.51) | 0.586 |
| aβ2GPI+ alone (n = 16) | 1.44 (0.25–3.24) | 0.042 |
| aCL+/aβ2GPI+ (n = 18) | 4.61 (0.53–11.44) | 0.001 |
* P-C4d (specific median florescence intensity; SMFI): median (interquartile range). ** aPL+: antiphospholipid antibody positive including aCL and/or aβ2GPI antibodies. aPL+: aPL-positive; aPL−: aPL-negative.