Table 2.
Final multivariate model
| Variable | B | SD | Wald | P (Wald) | Odds Ratio | 95% CI | |
| Body mass index | 0.03 | 0.009 | 10.51 | 0.001 | 1.03 | 1.012 | 1.049 |
| COPD | 1.19 | 0.37 | 10.17 | 0.001 | 3.30 | 1.58 | 6.88 |
| BIMA use | 1.15 | 0.49 | 5.44 | 0.020 | 3.18 | 1.20 | 8.43 |
| Constant | -6.33 | 0.82 | 59.17 | < 0.0001 | 0.002 | ||
Final multivariate model. B denotes the coefficient derived from computed stepwise logistic regression and the Odds ratio is statistically ecoefficient and describes the probability of having a mediastinitis in the presence of a risk factor. The Wald test was obtained by comparing the maximum likelihood estimate of the slope parameter to an estimate of its standard error. SD is the standard error of B and the 95% CI refers to the Odds ratio.