. 2018 Jul 3;2018:6457347. doi: 10.1155/2018/6457347

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/P value^¥	Time
Without surgery N = 110	WBC count	Correlation coefficient	0.130
	WBC count	P value	0.175
	Serum S100A8/A9	Correlation coefficient	0.225
	Serum S100A8/A9	P value	0.018^∗
	Urine S100A8/A9	Correlation coefficient	0.274
	Urine S100A8/A9	P value	0.004^∗
	Serum amyloid A	Correlation coefficient	0.270
	Serum amyloid A	P value	0.004^∗

Surgery N = 71	WBC count	Correlation coefficient	−0.028
	WBC count	P value	0.816
	Serum S100A8/A9	Correlation coefficient	−0.253
	Serum S100A8/A9	P value	0.034^∗
	Urine S100A8/A9	Correlation coefficient	−0.193
	Urine S100A8/A9	P value	0.106
	Serum amyloid A	Correlation coefficient	−0.116
	Serum amyloid A	P value	0.335

^∗Statistically significant P value. ^¥ P value from the Mann–Whitney U test.