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Table 2 Risk-factors for surgical site infection (SSI) with laparoscopic and open surgeries

From: Risk factors for surgical site infections following open versus laparoscopic colectomies: a cohort study

Risk-factor

Laparoscopic (596)

Open (269)

SSI

N = 110 (%)

No SSI N = 486(%)

P-value

SSI

N = 87 (%)

No SSI

N = 182 (%)

P-value

Age, years

68.1 ± 14.6

66.8 ± 15.5

0.414

70.7 ± 14.1

70.9 ± 14.8

0.924

Men, N

60 (54.5)

231 (47.5)

0.184

55 (63.2)

96 (52.2)

0.089

Weight, kg

76.5 ± 23.1

73.0 ± 17.6

0.133

72.4 ± 17.8

69.2 ± 16.6

0.149

DM

33 (30)

104 (21.4)

0.053

21 (24.1)

56 (30.8)

0.26

CVD

25 (22.7)

99 (20.4)

0.582

29 (33.3)

42 (23.1)

0.074

CKD

12 (10.9)

25 (5.1)

0.024

12 (13.8)

10 (5.5%)

0.02

COPD

14 (12.7)

24 (4.9)

0.003

13 (14.9)

15 (8.2)

0.092

Immunosuppression

8 (7.3)

21 (4.3)

0.194

8 (9.2)

7 (3.8)

0.074

Malignancy

84 (76.4)

372 (76.5)

0.968

66 (75.9)

152 (83.5)

0.134

IBD

7 (6.4)

21 (4.3)

0.153

9 (10.3)

13 (7.1)

0.37

Prior surgery

34 (30.9)

164 (33.7)

0.569

41 (47.1)

80 (44)

0.625

Pre-op hospital days

1.9 ± 2.9

1.5 ± 2.2

0.253

2.9 ± 5.2

2.4 ± 4.0

0.40

Rectal surg

16 (14.5)

67 (13.8)

0.835

23 (26.4)

29 (15.9)

0.041

Risk Index

  

0.005

  

0.082

 0

20

155

 

23

58

 

 1

65

263

 

36

88

 

 ≥ 2

25

68

 

28

36

 

Surgery duration > 75%

59 (63.9)

262 (54.4)

0.071

40 (46.5)

63 (34.8)

0.066

Stoma created

13 (11.8)

36 (7.4)

0.128

17 (19.5)

25 (13.7)

0.220

Converted to open

27 (24.5)

63 (13)

0.002

   

Appropriate prophylaxis

86 (81.1)

366 (76.3)

0.279

58 (67.4)

99 (57.6)

0.125

Second antibiotic dose

18 (16.4)

44 (9.1)

0.023

15 (17.2)

13 (7.1)

0.011

Post-op hospital days

13 ± 18.9

6.7 ± 3.6

 < 0.001

20.0 ± 23.2

11.1 ± 25.8

0.005

Reoperation

17 (15.5)

6 (1.2)

 < 0.001

23 (26.4)

6 (3.3)

 < 0.001

Readmission

34 (30.9)

35 (7.2)

 < 0.001

21 (24.1)

28 (15.4)

0.082

Mortality

2 (1.8)

5 (1)

0.488

8 (9.2)

2 (1.1)

0.002

  1. DM diabetes mellitus; CVD cardiovascular disease; CKD chronic kidney disease, COPD congestive obstructive pulmonary disease; IBD irritable bowel disease