Analysis of Erythrocyte C4d to Complement Receptor 1 Ratio: Use in Distinguishing between Infection and Flare-Up in Febrile Patients with Systemic Lupus Erythematosus
Table 3
Clinical characteristics of SLE patients with and without infection.
Variable
Infection (n = 22)
Noninfection (n = 25)
P value*
Mean ± standard deviation
Male (n, %)
2, 9.10%
5, 20.0%
0.423**
Age (y)
50.05 ± 16.88
35.44 ± 9.24
0.001
SLEDAI
7.41 ± 6.02
10.48 ± 5.67
0.079
C4d
1.40 ± 0.29
2.30 ± 0.66
<0.001
CR1
1.63 ± 0.31
1.48 ± 0.15
0.037
C4d/CR1
0.80 ± 0.91
3.34 ± 2.17
<0.001
CRP
4.71 ± 3.40
0.85 ± 1.16
<0.001
Anti-dsDNA
116.46 ± 155.21
182.77 ± 173.74
0.177
C3
81.98 ± 31.98
56.86 ± 29.40
0.007
C4
18.29 ± 9.93
13.00 ± 6.15
0.031
*P value by -test, **P value by Fisher’s exact test.
