Indication of conservative treatment by antibiotics for uncomplicated and complicated acute appendicitis

Table 2 Area under the curve and optimal cutoff values of clinical data as predictors of resistance to conservative treatment

	Cutoff value	Area under the curve	FPF	TPF
Time to visit hospital (hour)	22	0.5432	0.434	0.571
Body temperature (°C)	37.3	0.6923	0.368	0.679
WBC count (/μL)	15160	0.5568	0.236	0.429
CRP (mg/dL)	4.6	0.5584	0.351	0.500
Size of appendix (mm)	12	0.6409	0.533	0.786

TPF: True-positive fraction; FPF: False-positive fraction; CRP: C-reactive protein; WBC: White blood cell.