Table 2. Correlation between serum eosinophil cationic protein level and other laboratory parameters.

Variable		WBC	ANC	ESR	hsCRP	Peripheral eosinophil percent	Absolute eosinophil count	ECP
WBC (mL)
	r	1.000	0.735	0.317	0.108	−0.103	0.155	0.184
	p-value	-	<0.001*	<0.001*	0.065	0.072	0.007*	0.002*
ANC (mL)
	r	0.735	1.000	0.359*	0.221	−0.206	−0.024	0.068
	p-value	<0.001*	-	<0.001*	<0.001*	<0.001	0.676	0.254
ESR (mm/hr)
	r	0.317	0.359	1.000	0.512	−0.076	0.008	0.129*
	p-value	<0.001*	<0.001*	-	0.000*	0.206	0.890	0.038
hsCRP (mg/dL)
	r	0.108	0.221	0.512	1.000	−0.046	−0.009	0.106
	p-value	0.065	<0.001*	<0.001*	-	0.434	0.872	0.080
Peripheral eosinophil percent (%)
	r	−0.103	−0.206	−0.076	−0.046	1.000	0.941	0.594
	p-value	0.072	<0.001*	0.206	0.434	-	<0.001*	<0.001*
Absolute eosinophil count (mL)
	r	0.155	−0.024	0.008	−0.009	0.941*	1.000	0.660
	p-value	0.007	0.676	0.890	0.872	<0.001	-	<0.001*
Serum ECP (mg/L)
	r	0.184	0.068	0.129	0.106	0.594	0.660	1.000
	p-value	0.002*	0.254	0.038*	0.080	<0.001*	<0.001*	-

WBC: white cell count, ANC: absolute neutrophil count, ESR: erythrocyte sedimentation rate, hsCRP: highly sensitive C-reactive protein, ECP: eosinophil cationic protein, –: not available.

^*p-value<0.05 indicates statistical significance.