Table 3. Correlation between clinical parameters and inflammatory biomarkers.

Inflammatory biomarker		Fever, ≥38°C	Bloody diarrhea	Bacterial pathogen	Viral pathogen
Blood
	CRP (mg/L)	<0.001*	0.98	<0.001*	0.64
	ESR (mm/hr)	0.05	0.19	0.04†	0.32
	Leukocytes (/µL)	0.57	0.58	0.54	0.40
Fecal
	Calprotectin (µg/g)	0.69	0.12	0.03†	0.61
	Lactoferrin (µg/mL)	0.38	0.34	0.003‡	0.22
	MPO (ng/mL)	0.35	0.25	0.02†	0.53
	PMN-e (µg/mL)	0.96	0.09	0.05	0.33
	Leukocyte, positive	0.17	0.52	0.03†	1.00
	Occult blood, positive	0.77	0.02†	0.002‡	0.78

CRP: C-reactive protein, ESR: erythrocyte sedimentation rate, MPO: myeloperoxidase, PMN-e: polymorphonuclear elastase.

p-values were calculated by Mann-Whitney test or Fisher's exact test; ^*p<0.001, ^†p<0.05, ^‡p<0.01.