Procalcitionin as a diagnostic marker to distinguish upper and lower gastrointestinal perforation

Table 1 Baseline data of patients

	Upper	Lower	t value	P value
	n = 19	n = 27
Age	58.84	67.59	-2.280	0.028
Gender
Male	7	14	1.013	0.314
Female	12	13
Height	168.47	165.37	1.316	0.195
Weight	63.42	58.37	1.589	0.119
BMI	22.27	21.21	1.176	0.246
APACHEII	12.47	18.15	-2.477	0.017
SOFA	5.84	9.33	-3.041	0.004
PCT	33.26	40.73	-3.079	0.001
WBC	13.67	11.27	1.105	0.275

APACHE II: Acute physiology and chronic health evaluation II; SOFA: Sequential organ failure assessment score.

Table 2 Correlation analysis

	APACHEII	SOFA	PCT	WBC	Prognosis
PCT	0.715	0.611	1.000	-0.143	-0.414
	< 0.001	< 0.001	< 0.001	0.342	0.004
WBC	-0.242	-0.033	-0.143	1.000	0.112
	0.105	0.829	0.342		0.457

PCT: Procalcitionin.

Table 3 Area under the receiver operating characteristic curve

Area	Std. Error	Asymptotic Sig.	Asymptotic 95%CI
			Lower bound	Upper bound
0.778	0.077	0.001	0.628	0.928