Vascular anatomy of inferior mesenteric artery in laparoscopic radical resection with the preservation of left colic artery for rectal cancer

Table 1 Patient characteristic data

Factors	Type A (n = 51)	Type B (n = 26)	Type C (n = 33)	Statistical value	P value
Age (yr, mean ± SD)	58.6 ± 14.1	60.4 ± 15.0	62.3 ± 12.9	F = 2.881	0.06
Male, n (%)	31 (60.8)	15 (57.7)	18 (54.5)	Pearson χ2 = 0.324	0.85
BMI (kg/m2)	25.3 ± 5.4	24.8 ± 4.9	25.1 ± 4.6	F = 0.331	0.72
Stage (UICC 8th)				Fisher = 1.510	0.84
I	7	5	6
II	26	10	16
III	18	11	11

P < 0.05. BMI: Body mass index; UICC: Union for International Cancer Control.