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Table 4 Logistic regression results: variables associated with the occurrence of postoperative complications

From: Central venous-to-arterial carbon dioxide difference as a prognostic tool in high-risk surgical patients

  B (SE) Odds ratio 95% confidence interval P
Constant −5.61 (3.50)    
PCO2 gap 0.66 (0.18) 1.93 1.36-2.75 <0.001
SOFA score 0.42 (0.15) 1.52 1.14-2.02 0.004
Lactate 0.38 (0.37) 1.47 0.71-3.02 0.300
SAPS II score 0.04 (0.04) 1.04 0.96-1.13 0.347
Emergency surgery 0.09 (1.17) 1.10 0.11-10.80 0.937
Bicarbonate −0.07 (0.11) 0.931 0.75-1.16 0.931
Troponin 1.87 (1.47) 6.50 0.36-117.06 0.204
diuresis 0.0003 (0.002) 1.00 0.997-1.003 0.825
  1. Model χ2 = 54.96, P < 0.001, R2 = 0.50 (Hosmer and Lemeshow), R2 = 0.48 (Cox and Snell), R2 = 0.66 (Nagelkerke). Significant P values are indicated in bold text. PCO2 gap, central venous-to-arterial difference in carbon dioxide; SAPS II, Simplified Acute Physiology Score II; SE, standard error; SOFA, Sequential Organ Failure Assessment.