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 2

Clinical pathogens and characteristics of patients with SLE and infection.

	Infectious disease	Pathogen	CRP	SLEDAI before admission	SLEDAI on admission	Proposed SLE flares; (SLEDAI increased by ≧3)	C4d/CR1 ratio
1	UTI	Escherichia coli	10.4	1	5	Yes	0.4761
2		E. coli	13.1	2	8	Yes	0.0974
3		E. coli	5.16	1	8	Yes	0.0341
4		Lactobacillus	0.59	1	14	Yes	1.2286
5		Candida	2.56	4	5	No	3.5118
6		Candida	5.34	1	3	No	0.92
7		Candida	6.34	1	6	Yes	0.5254
8		Klebsiella pneumoniae	4.24	4	6	No	0.5143
9	Pneumonia	Pseudomonas aeruginosa	4.87	4	10	Yes	0.1613
10		Streptococcus pneumoniae	2.65	1	24	Yes	1.8182
11		Mycoplasma	0.1	1	5	Yes	0.1111
12		Mycoplasma	1.67	2	3	No	0.1
13		H1N1	10.6	6	14	Yes	0.4182
14	Peritonitis	Klebsiella pneumoniae	3.37	3	17	Yes	1.0384
15	Infectious diarrhoea	Shigella sonnei	7.88	1	1	No	0.054
16		Shigella sonnei	3.49	1	5	Yes	0.36
17	Sepsis	Enterococcus faecalis	5.76	1	2	No	0.175
18	Cellulitis	Staphylococcus aureus	5.24	1	14	Yes	2.1818
19		Staphylococcus aureus	0.42	1	1	No	0.25
20	Viral infection	CMV	4.47	2	5	Yes	0.5238
21		CMV	4.18	1	10	Yes	2.3636
22		Herpes simplex virus	1.83	1	2	No	0.7586