Table 3 Basic characteristics in the time of first postoperative defecation for patients undergoing colorectal surgeries

Female

504(47.90)

177(46.80)

0.13

0.71

Age (years)

63.39 ± 13.16

66.69 ± 12.45

-4.25

< 0.01

BMI^a

23.56 ± 3.49

23.66 ± 3.58

-0.49

0.62

Right colectomy

379(36.00)

103(27.20)

9.59

< 0.01

Transverse colectomy

58(5.50)

13(3.40)

2.54

0.11

Left colectomy

101(9.60)

40(10.60)

0.30

0.58

Sigmoid colectomy

374(35.60)

127(33.60)

0.47

0.50

Proctectomy

207(19.70)

114(35.50)

7.55

< 0.01

Malignant

1000(95.10)

365(96.60)

1.45

0.23

Hypertension

653(62.10)

231(61.10)

0.11

0.74

CAD^b

131(12.50)

61(16.10)

3.25

0.07

Arrhythmia

66(6.30)

30(7.90)

1.23

0.27

Cerebral infarction

85(8.10)

35(9.30)

0.50

0.48

Encepalorrhagia

4(0.40)

6(1.60)

5.84

0.02

Hypothyroidism

19(1.80)

12(3.20)

2.46

0.12

Diabetes mellitus

204(18.40)

61(18.60)

0.00

0.95

COPD^c

45(4.30)

20(5.30)

0.66

0.42

Renal inadequacy

24(2.30)

13(3.40)

1.48

0.22

Hyperlipidemia

220(20.90)

72(19.00)

0.60

0.44

Hepatic inadequacy

15(1.40)

5(1.30)

0.02

0.88

Blood disease

10(1.00)

3(0.80)

0.08

0.78

History of alcohol

144(13.70)

47(12.40)

0.38

0.54

History of smocking

181(17.20)

63(16.70)

0.06

0.81

Preoperative chemotherapy

36(3.40)

22(5.80)

4.11

0.04

Preoperative anemia

469(44.60)

166(43.90)

0.05

0.82

Preoperative ileus

199(18.90)

82(21.70)

1.36

0.24

ASA I^d

133(12.60)

30(7.90)

10.34

0.02*

ASA II

759(72.10)

270(71.40)

ASA III

152(14.40)

74(19.60)

ASA IV

8(0.80)

4(1.10)

Soapsuds enema for bowel preparation

106(10.10)

442(11.60)

0.73

0.40

Oral laxative bowel preparation

968(92.00)

338(89.40)

2.37

0.12

Glycerin enema for bowel preparation

150(14.30)

84(22.20)

12.89

< 0.01

Oral antibiotics for bowel preparation

35(3.30)

27(7.10)

9.76

< 0.01

Laparotomy

532(50.60)

200(52.90)

0.61

0.44

Extended radical resection

923(87.70)

329(87.00)

0.13

0.72

Operative time (min)

206.96 ± 63.13

211.02 ± 79.39

-0.90

0.37

Preoperative antibiotics

61(5.80)

36(9.50)

6.10

0.01

Preoperative fortified antibiotics

34(3.20)

23(6.10)

5.91

0.02

Postoperative fortified antibiotics

456(43.30)

155(41.00)

0.62

0.43

Duration of antibiotics (day)

7.10 ± 4.86

7.65 ± 4.68

-1.93

0.05

Time of postoperative feeding (day)

5.38 ± 1.92

6.59 ± 2.75

-7.08

< 0.01

Probiotics

305(29.00)

78(20.60)

9.91

< 0.01

Postoperative analgesia

996(94.70)

357(94.40)

0.03

0.86

None

56(5.32)

22(5.82)

Opioids

930(88.40)

332(87.84)

Opioid & NSAIDs^e

53(5.04)

23(6.08)

NSAIDs

13(1.24)

1(0.26)

Duration of analgesia

2.77 ± 1.00

2.85 ± 1.19

-1.14

0.25

Hypoproteinemia

867(82.40)

378(87.00)

4.34

0.04

Extraction of gastric tube (day)

1.77 ± 3.53

2.16 ± 2.57

-1.94

0.05

Extraction of drainage tube (day)

8.73 ± 6.93

9.98 ± 7.12

-3.00

< 0.01