|
Variable
|
LC (n=598)
|
RC (n=272)
|
t/χ2
|
p value
|
|---|
|
Sex
| | |
4.073
|
0.044
|
|
Male
|
373
|
150
| | |
|
Female
|
225
|
122
| | |
|
Age (years)
|
55.8±11.7
|
58.8±12.7
|
− 3.458
|
0.001
|
|
Diabetes mellitus
| | |
0.204
|
0.652
|
|
No
|
405
|
180
| | |
|
Yes
|
193
|
92
| | |
|
Hypertension
| | |
0.672
|
0.412
|
|
No
|
406
|
177
| | |
|
Yes
|
192
|
95
| | |
|
Smoking habit
| | |
0.212
|
0.645
|
|
Nonsmoker
|
442
|
197
| | |
|
Smoker
|
156
|
75
| | |
|
Current alcohol use
| | |
0.846
|
0.358
|
|
No
|
423
|
184
| | |
|
Yes
|
175
|
88
| | |
|
Previous abdominal surgery
| | |
0.093
|
0.760
|
|
No
|
512
|
235
| | |
|
Yes
|
86
|
37
| | |
|
Chronic obstructive pulmonary disease
| | |
0.064
|
0.801
|
|
No
|
529
|
239
| | |
|
Yes
|
69
|
33
| | |
|
BMI (kg/m2)
|
23.3±3.2
|
22.7±2.7
|
2.416
|
0.016
|
|
Preoperative anemia
| | |
1.826
|
0.177
|
|
No
|
444
|
190
| | |
|
Yes
|
154
|
82
| | |
|
Preoperative serum albumin level
|
39.1±4.5
|
38.1±4.4
|
3.055
|
0.002
|
|
ASA
| | |
0.725
|
0.395
|
|
I–II
|
443
|
194
| | |
|
≥III
|
155
|
78
| | |
|
Tumor size
| | |
0.387
|
0.534
|
|
<5 cm
|
306
|
133
| | |
|
≥5 cm
|
292
|
139
| | |
|
Operation time (min)
| | |
5.744
|
0.017
|
|
<180
|
273
|
148
| | |
|
≥180
|
325
|
124
| | |
|
Blood loss (ml)
|
168.9±76.2
|
174.7±79.1
|
− 1.039
|
0.299
|
|
Grade of differentiation
| | |
12.860
|
0.002
|
|
Well
|
92
|
49
| | |
|
Moderate
|
355
|
127
| | |
|
Poorly
|
151
|
96
| | |
|
Lymph node resected
|
23.9±9.6
|
24.9±9.4
|
-1.527
|
0.127
|
|
pTNM stage
| | |
3.808
|
0.149
|
|
I
|
103
|
44
| | |
|
II
|
262
|
138
| | |
|
III
|
233
|
90
| | |
|
PPOI
| | |
19.470
|
0.000
|
|
No
|
540
|
216
| | |
|
Yes
|
58
|
56
| | |
|
First flatus
|
2.1±1.8
|
3.5±2.4
|
− 9.379
|
0.000
|
|
First semi-liquid diet
|
3.6±1.8
|
5.0±2.5
|
− 9.765
|
0.000
|
|
Length of stay
|
6.2±1.4
|
7.6±2.3
|
− 9.674
|
0.000
|
- LC left colectomy, RC right colectomy, BMI body mass index, ASA American Society of Anesthesiologists, PPOI prolonged postoperative ileus
