Table 3.

Sen, Spe, Acc, PPV, and NPV for serum NSE, CRP, and FC in discriminating between patients with CD and healthy people.

	Sen (%)	Spe (%)	Acc (%)	PPV (%)	NPV (%)
NSE (in ng/mL cutoff 15.06)	48.98	82.88	67.41	70.59	65.94
CRP (in mg/L cutoff 7.93)	56.73	89.73	74.67	82.25	71.20
FC (in μg/g cutoff 752.40)	73.58	79.69	76.92	75.00	78.46
NSE+CRP	80.41	74.66	77.28	72.69	81.95

CD, Crohn's disease; NSE, neuron-specific enolase; CRP, C-reactive protein; FC, fecal calprotectin; Sen, sensitivity; Spe, specificity; Acc, accuracy; PPV, positive predictive value; NPV, negative predictive value.