Causes of epigastric pain and vomiting after laparoscopic-assisted radical right hemicolectomy - superior mesenteric artery syndrome

Table 2 Comparison of risk factors between the two groups

Risk factor		Experimental group (n = 6)	Control group (n = 20)	t/χ2	P value
Angle (°)		23.50 ± 4.23	36.35 ± 8.13	3.686b	0.001
Distance (mm)		9.33 ± 1.37	14.45 ± 4.44	4.491b	0.000
BMI (kg/m2)		18.82 ± 3.13	22.85 ± 2.33	3.436b	0.002
Type of lymphadenectomy				0.000a	1.000
	D3	5	15
	D2	1	5
Surgical approach				1.219a	0.544
	Lateral approach group	2	5
	Intermediategroup	1	8
	Caudal approach group	3	7

^aχ² test.

^bt test.

BMI: Body mass index.