Table 1 Baseline characteristics of patient from the dehiscence and control group

Number (male/female):

56 (37/19)

168 (95/73)

0.210

Age [years]

66.6 ± 13

66.8 ± 12.8

0.872

Type of the procedure [n]:

0.276

  - Elective

11 (20%)

44 (26%)

  - Emergency

45 (80%)

124 (74%)

Type of operation [n]:

- Stomach/duodenum

5 (9%)

14 (8%)

0.898

  - Gall bladder

5 (9%)

13 (8%)

0.794

  - Small intestine

9 (16%)

36 (21%)

0.475

  - Large intestine

27 (49%)

83 (49%)

0.928

  - Others

10 (16%)

22 (13%)

0.450

Opening of the bowel [n]

42 (76%)

122 (73%)

0.163

Malignancy [n]

24 (44%)

71 (42%)

0.858

Co-morbidities [n]:

  - Hypertension

28 (51%)

92 (55%)

0.619

- Heart disease

23 (42%)

61 (36%)

0.464

  - Diabetes

8 (14%)

28 (17%)

0.711

  - COPD

9 (16%)

16 (9%)

0.163

  - Other

42 (76%)

116 (69%)

0.326

BMI:<20.5/20.5-30/>30 kg/m² [n]

12/31/13

24/119/24

0.123

Past operations [n]

25 (45.5%)

91 (54%)

0.261

Smoking [n]

15 (27.3%)

41 (24%)

0.670

Chronic steroids use [n]

7 (12.7%)

6 (4%)

0.011

Wound infection

34 (61%)

23 (14%)

<0.001

Anastomotic insufficiency

5 (9%)

5 (3%)

0.768

Circulatory insufficiency [n]

21 (37%)

43 (26%)

0.042

Median laparotomy [n]

47 (84%)

143 (85%)

0.952

Retention sutures [n]

13 (23%)

27 (16%)

0.173

Time of op. [n]:

  7–15.00

24 (43%)

81 (48%)

0.681

  15.01-23.59

26 (46%)

73 (43%)

0.729

  00.00-6.59

6 (11%)

14 (8.3%)

0.890

ICU admission [n]

25 (45%)

39 (23%)

0.001

Length of hospital. [days]

38.3 ± 27.1

15.8 ± 12.9

<0.001

Biochemical factors:

  - WBC [10³/μl]

12.5 ± 6.0

11.6 ± 5.9

0.260

  - HCT [%]

35.9 ± 7.2

37.7 ± 6.4

0.096

  - HGB [g/dl]

12.2 ± 4.6

12.4 ± 2.2

0.669

  - CRP [mg/l]

127.13 ± 108.2

111.49 ± 100.27

0.476

  - Albumin [g/l]

30.2 ± 12.9

32.69 ± 9.6

0.260

  - Protein [g/l]

52.44 ± 13.9

56.85 ± 13.8

0.167

  - Creatinine [μmol/l]

104.4 ± 62.5

91.98 ± 63.7

0.308

Time to dehiscence [days]

9.8 ± 6.5

-