Table 2.

Univariate analysis of patient/tumor-related factors

		Anastmotic Leakage
Variables		negative	positive	P value
age	<75	126	9
	≧75	24	2	0.849
sex	Male	90	9
	Female	60	2	0.151
BMI	<25	51	3
	≧25	99	8	0.649
mGPS	0 + 1	147	9
	2	3	2	0.003
Serum albmin	<3.5	6	3
(g/dL)	≧3.5	143	8	0.006
CRP	≧0.5	12	2
(mg/dL)	<0.5	138	9	0.263
ileus	Yes	7	2
	No	143	9	0.060
diabetes	Yes	7	2
	No	143	9	0.060
preparation	MC	125	8
	PEG	18	2
	Others	3	1	0.292
presurgical treatment	Yes	32	2
	No	118	8	0.805
location	RS	25	0
	Ra+Rb	125	11	0.141
pathological Stage	0+I	45	2
	II+III+IV	99	9	0.363
pathological depth	Tis−T2	61	2
	T3+T4	72	9	0.075
tumor size	<4 cm	73	3
	≧4 cm	76	8	0.164

BMI: body mass index, CRP: C-reactive protein, RS: rectosigmoid, Ra: rectum above peritoneal reflection, Rb: rectum below peritoneal reflection, MC: magnecium citrate, PEG: polyethylene glycole

P value of <0.05 was considered statistically significant.