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

Table 5

Distribution of the mean time of onset of pain until patient referral on the levels of white blood cell count and biomarker between the surgical and the nonsurgical groups.

Group	Variable	Correlation/ value^¥	Time
Without surgery	WBC count	Correlation coefficient	0.130
		value	0.175
	Serum S100A8/A9	Correlation coefficient	0.225
		value	0.018
	Urine S100A8/A9	Correlation coefficient	0.274
		value	0.004
	Serum amyloid A	Correlation coefficient	0.270
		value	0.004
Surgery	WBC count	Correlation coefficient	−0.028
		value	0.816
	Serum S100A8/A9	Correlation coefficient	−0.253
		value	0.034
	Urine S100A8/A9	Correlation coefficient	−0.193
		value	0.106
	Serum amyloid A	Correlation coefficient	−0.116
		value	0.335

Statistically significant value. value from the Mann–Whitney test.