Table 5 Deep SSIs distribution and univariate odds ratio stratified for principal clinical and demographic characteristics

Sex

 Female

 Male

63 (87.5)

99 (93.4)

9 (12.5)

7 (6.6)

2.02 (0.72;5.70)

0.184

Age (years)^a

 <68

 ≥68

78 (91.8)

84 (90.3)

7 (8.2)

9 (9.7)

1.19 (0.42,3.36)

0.737

Body mass index

 <25Kg/m²

 ≥25Kg/m²

104 (94.6)

58 (85.3)

6 (5.4)

10 (14.7)

2.99 (1.03;8.64)

0.043

Previous neoplasia

 No

 Yes

130 (91.6)

32 (88.9)

12 (8.4)

4 (11.1)

1.35 (0.41;4.48)

0.619

Surgery for neoplasia

 No

 Yes

23 (92.0)

139 (90.9)

2 (8.0)

14 (9.1)

1.16 (0.25;5.44)

0.852

Diabetes

 No

 Yes

130 (90.9)

32 (91.4)

13 (9.1)

3 (8.6)

0.94 (0.25;3.49)

0.923

Preoperative jaundice

 No

 Yes

108 (90.8)

54 (91.5)

11 (9.2)

5 (8.5)

0.91 (0.30;2.75)

0.866

Cardiac Disease

 No

 Yes

144 (93.5)

18 (75.0)

10 (6.5)

6 (25.0)

4.80 (1.56;14.78)

0.006

ASA physical status

 1-2

 3-4

116 (94.3)

46 (83.6)

7 (5.7)

9 (16.4)

3.24 (1.14;9.22)

0.027

Previous antibiotic therapy

 No

 Yes

149 (90.9)

13 (92.9)

15 (9.1)

1 (7.1)

0.76 (0.09;6.25)

0.802

Preoperative Chemotherapy/RT

 No

 Yes

152 (90.5)

10 (100)

16 (9.5)

0

/

0.306

Preoperative time^a

 ≤28.5 days

 >28.5 days

85 (94.4)

77 (87.5)

5 (5.6)

11 (12.5)

2.43 (0.81;7.30)

0.114