Table 2.

Univariate and multivariate analysis of CT findings in patients with or without StBO

	Univariate analysis(n = 281)			Multivariate analysis(n = 281)
CT characteristics	SiBO (n = 236)	StBO (n = 45)	p-value	OR (95%CI)	p-value
Mesenteric fluid			0.018
none	44(18.6%)	2(4.4%)
yes	192(81.4%)	43(95.6%)
Ascites			0.002	4.067 (1.506–10.983)	0.006
none	81(34.3%)	5(11.1%)
yes	155(65.7%)	40(88.9%)
Spiral signs			< 0.001	5.506 (2.609–11.623)	< 0.001
none	211(89.4%)	27(60.0%)
yes	25(10.6%)	18(40.0%)
Concentric circle sign			0.476**
none	225(95.3%)	42(93.3%)
yes	11(4.7%)	3(6.7%)
Small bowel feces sign			0.901
none	113(47.9%)	22(48.3%)
yes	123(52.1%)	23(51.1%)
Edema of bowel wall			0.037
none	85(36.0%)	9(20.0%)
yes	151(64.0%)	36(80.0%)
Bowel wall thickness (median)	3.33	3.48	0.110*

The bold indicates that the parameters have statistical difference (p < 0.05)

SiBO simple bowel obstruction, StBO strangulated bowel obstruction, OR odds ratio,

CI confidence interval

Values marked with “*” were compared using Wilcoxon rank-sum test

Values marked with “**” were adjusted p-values