Table 2.

Single factor analysis of postoperative AL and clinical parameters of patients.

Parameters		Anastomotic leak		p
		No (326)	Yes (56)
NRS-2002	<3	301	40	<0.001
	≥3	25	16
PG-SGA	0-3	254	6	<0.001
	4-8	71	37
	>8	1	13
History of smoking	No	258	40	0.198
	Yes	68	16
History of alcohol drinking	No	279	46	0.504
	Yes	47	10
Hypertension	No	247	45	0.455
	Yes	79	11
Coronary heart disease	No	287	48	0.625
	Yes	39	8
Diabetes	No	293	32	<0.001
	Yes	33	24
History of abdominal surgery	No	275	50	0.305
	Yes	51	6
Gut preparation	Traditional	93	16	0.274
	Laxative	189	28
	Both	44	12
Incomplete intestinal obstruction	No	310	52	0.488
	Yes	16	4
Perioperative blood transfusion	No	322	36	<0.001
	Yes	4	20
Diarrhea	No	273	17	<0.001
	Yes	53	39
T stage	1	10	0	<0.001
	2	85	1
	3	154	30
	4	77	25
N stage	0	195	19	<0.001
	1	68	15
	2	63	22
M stage	0	294	25	<0.001
	1	32	31
AJCC	1	78	6	<0.001
	2	116	12
	3	105	20
	4	27	18
Surgical approach	Laparoscopic	57	15	0.096
	Open	265	39
	Transfer to laparotomy	4	2
ASA score	1	92	5	0.003
	2	195	38
	3	39	13
Neoadjuvant therapy	No	314	55	0.522
	Yes	12	1