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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