Diagnostic Accuracy of Serum and Urine S100A8/A9 and Serum Amyloid A in Probable Acute Abdominal Pain at Emergency Department

Table 6

Spearman rank correlation coefficients of the relative increase of S100A8/A9 to those of WBC and serum amyloid A.

Variables	PSI+/−			PNSI+/−
			value			value
WBC	52	0.901	0.002	23	0.432	0.060
Serum amyloid A	44	0.58	0.01	30	0.438	0.064

PSI+/− (PSI, pain in the surgical intervention group), comprising subjects in whom acute abdominal pain remitted postsurgically, and PNSI+/− (PNSI, pain in the nonsurgical intervention group), consisting of those subjects who were acute abdominal pain remitted after nonsurgical intervention.