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Table 2 Univariate binary logistic regression of components of the intra-abdominal view for severe complicated intra-abdominal sepsis (SCIAS) or 30-day mortality

From: The role of the intra-abdominal view in complicated intra-abdominal infections

Risk factor

n (%)

SCIAS or 30-day mortality, n (%)

OR (95% CI)

P value

B

Perforated organ

 Appendix

109 (39)

5 (5)

Reference

< 0.001

 

 Gallbladder

11 (4)

4 (36)

11.89 (2.60–54.42)

0.001

2.475

 Colorectal

101 (36)

37 (37)

12.03 (4.49–32.18)

< 0.001

2.487

 Gastroduodenal

32 (11)

12 (38)

12.48 (3.96–39.33)

< 0.001

2.524

 Small bowel

30 (11)

13 (43)

15.91 (5.03–50.33)

< 0.001

2.767

 Non-appendiceal source*

174 (62)

66 (38)

12.71 (4.93–32.81)

< 0.001

2.542

Extent of peritonitis by number of affected areas

 1

30 (11)

4 (13)

Reference

0.001

 

 2

47 (17)

7 (15)

1.14 (0.30–4.28)

0.849

0.129

 3

29 (10)

1 (3)

0.23 (0.02–2.21)

0.204

− 1.460

 4

32 (11)

8 (25)

2.17 (.58–8.13)

0.252

0.773

 5

32 (11)

7 (22)

1.82 (0.47–6.99)

0.383

0.599

 6

113 (40)

44 (39)

4.15 (1.35–12.69)

0.013

1.422

 Diffuse peritonitis (≥ 4 areas)*

177 (63)

59 (33)

3.92 (1.99–7.71)

< 0.001

1.365

Bowel dilatation

 No bowel dilatation

164 (58)

35 (21)

Reference

0.097

 

 Small bowel only

77 (27)

19 (25)

1.21 (0.64–2.29)

0.563

0.188

 Colon only*

19 (7)

8 (42)

2.68 (1.00–7.17)

0.050

0.986

 Small bowel and colon

23 (8)

9 (39)

2.37 (0.95–5.93)

0.065

0.863

Type of exudate

 Clear

16 (6)

3 (19)

Reference

0.001

 

 Purulent

160 (57)

27 (17)

0.88 (0.24–3.30)

0.849

− 0.128

 Fecal

85 (30)

30 (35)

2.36 (0.62–8.95)

0.206

0.860

 Bile

22 (8)

11 (52)

4.33 (0.96–19.58)

0.057

1.466

 Fecal or bile*

107 (38)

41 (38)

3.02 (1.74–5.26)

< 0.001

1.106

Extent of fibrin by number of affected areas

 0

37 (13)

15 (41)

Reference

< 0.001

 

 1

77 (27)

12 (16)

0.27 (0.11–0.67)

0.004

− 1.306

 2

46 (16)

7 (15)

0.26 (0.09–0.74)

0.120

− 1.335

 3

28 (10)

3 (11)

0.18 (0.05–0.69)

0.130

− 1.737

 4

31 (11)

6 (19)

0.35 (0.12–1.06)

0.640

− 1.044

 5

24 (9)

10 (42)

1.05 (0.37–2.98)

0.930

0.047

 6

39 (14)

18 (46)

1.26 (0.51–3.12)

0.622

0.229

Amount of substantial fibrin by number of affected areas

 0

140 (49)

33 (24)

Reference

0.016

 

 1

72 (25)

12 (17)

0.65 (0.31–1.35)

0.246

− 0.433

 2

25 (9)

6 (24)

1.02 (0.38–2.78)

0.963

0.024

 3

19 (7)

7 (37)

1.89 (0.69–5.20)

0.216

0.637

 4

10 (4)

2 (20)

0.81 (0.16–4.01)

0.797

− 0.210

 5

6 (2)

4 (67)

6.49 (1.14–37.01)

0.035

1.869

 6

11 (4)

7 (64)

5.67 (1.56–20.59)

0.008

1.736

 Substantial fibrin ≥ 5 or more areas*

17 (6)

11 (65)

6.29 (2.2–17.73)

< 0.001

1.840

Extent of redness by number of affected areas

 0

17 (6)

8 (47)

Reference

< 0.001

 

 1

41 (14)

6 (15)

0.19 (0.05–0.70)

0.012

− 1.646

 2

55 (19)

7 (13)

0.16 (0.05–0.57)

0.004

− 1.808

 3

32 (11)

3 (9)

0.12 (0.03–0.53)

0.006

− 2.151

 4

32 (11)

7 (22)

0.32 (0.09–1.12)

0.074

− 1.155

 5

27 (10)

7 (26)

0.39 (0.11–1.42)

0.155

− 0.932

 6

78 (28)

33 (42)

0.83 (0.29–2.37)

0.720

− 1.192

Amount of substantial redness by number of affected areas

 0

125 (44)

26 (21)

Reference

< 0.001

 

 1

73 (26)

10 (14)

0.60 (0.27–1.34)

0.214

− 0.504

 2

34 (12)

10 (29)

1.59 (0.68–3.73)

0.290

0.462

 3

21 (7)

5 (24)

1.19 (0.40–3.55)

0.755

0.174

 4

9 (3)

5 (56)

4.76 (1.19–18.99)

0.027

1.560

 5

3 (1)

2 (67)

7.62 (0.66–87.29)

0.103

2.030

 6

18 (6)

13 (72)

9.90 (3.24–30.29)

< 0.001

2.293

 Substantial redness ≥ 4 or more areas*

30 (11)

20 (67)

7.92 (3.49–17.97)

< 0.001

2.070

Localization of cIAI non-parietal (only visceral)

49 (17)

11 (22)

0.84 (0.40–1.75)

0.639

− 1.094

  1. Method: enter, all variables categorical. Italics indicate statistical significance
  2. Abbreviations: OR odds ratio, B regression coefficient, cIAI complicated intra-abdominal infection
  3. *Included in multivariate analysis