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

Table 1

Comparing baseline characteristics between the two groups of the study participants.

Characteristics	Surgical ()	Nonsurgical ()	values
Age (years)	37.04 ± 15.86	34.81 ± 14.4	0.102
Gender
Male	31 (43.7%)	44 (40%)	0.965
Female	25 (40.3%)	66 (60%)	0.0541
WBC count (×10^9/L)	12.7 ± 10.14	9.82 ± 3.68	0.0445
Serum S100A8/A9	208.17 ± 101.5	95.95 ± 84.3	0.0238
Urine S100A8/A9	147.64 ± 44.5	81.22 ± 64.4	0.0315
Serum amyloid A	21.37 ± 20.38	20.95 ± 23.09	0.996
Pain onset
Admission day	20 (28.2%)	31 (28.2%)	1.00
<5 days before admission	42 (59.2%)	63 (57.3%)	0.998
5–10 days before admission	8 (11.2%)	13 (11.8%)	1.00
>10 days before admission	1 (1.4%)	3 (2.7%)	0.985

Mean ± SD. Number (%)