Table 2

Correlations between complement proteins and clinical and laboratory data

	C3		C3a		C4		sC5b-9
	r	P value	r	P value	r	P value	r	P value
Age	−0.14	0.017	0.17	0.003	−0.06	0.31	0.13	0.03
Hb	0.15	0.009	−0.1	0.1	0.007	0.91	−0.09	0.12
WCC	0.04	0.55	0.01	0.81	0.1	0.077	−0.03	0.58
Platelets	0.21	<0.001	−0.27	<0.001	0.088	0.13	−0.19	<0.001
CRP	−0.42	<0.001	0.48	<0.001	−0.17	0.004	0.36	<0.001
Procalcitonin	−0.1	0.076	0.11	0.066	−0.09	0.14	0.048	0.41
LDH	−0.41	<0.001	0.5	<0.001	−0.18	0.002	0.35	<0.001
Ferritin	−0.41	<0.001	0.45	<0.001	−0.16	0.007	0.3	<0.001
PT	−0.38	<0.001	0.39	<0.001	−0.16	0.006	0.35	<0.001
APTT	−0.44	<0.001	0.43	<0.001	−0.11	0.05	0.37	<0.001
D-dimer	−0.54	<0.001	0.56	<0.001	−0.17	0.003	0.43	<0.001
Fibrinogen	−0.46	<0.001	0.51	<0.001	−0.14	0.014	0.44	<0.001
C3	–	–	−0.8	<0.001	0.34	<0.001	−0.74	<0.001
C3a	−0.8	<0.001	–	–	−0.41	<0.001	0.84	<0.001
C4	0.34	<0.001	−0.41	<0.001	–	–	−0.37	<0.001
sC5b-9	−0.74	<0.001	0.84	<0.001	−0.37	<0.001	–	–
Creatinine	−0.23	<0.001	0.31	<0.001	−0.09	0.12	0.24	<0.001
Urea	−0.3	<0.001	0.43	<0.001	−0.18	0.002	0.33	<0.001
Albumin	0.35	<0.001	−0.44	<0.001	0.17	0.004	−0.32	<0.001
AST	−0.25	<0.001	0.33	<0.001	−0.16	0.003	0.25	<0.001
ALT	−0.24	<0.001	0.32	<0.001	−0.19	0.001	0.27	<0.001
O₂ saturation	0.39	<0.001	−0.49	<0.001	0.22	<0.001	−0.4	<0.001
Hospital stay	−0.13	0.025	0.21	<0.001	−0.1	0.078	0.27	<0.001

ALT, alanine aminotransferase; APTT, activated partial thromboplastin time; AST, aspartate aminotransferase; CRP, C reactive protein; Hb, hemoglobin; LDH, lactate dehydrogenase; O₂, oxygen; PT, prothrombin time; WCC, white cell count.