Table 3.
Multivariate logistic regression analysis
| Factors | B | S.E. | Wals | df | Sig. | Exp (B) | 95% C.I. for EXP (B) | |
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Lower limit | Upper limit | |||||||
| Age | 0.644 | 0.480 | 1.800 | 1 | 0.180 | 1.905 | 0.743 | 4.882 |
| Comorbid diabetes mellitus | -0.289 | 0.589 | 0.240 | 1 | 0.624 | 0.749 | 0.236 | 2.378 |
| Preoperative NYHA classification | 1.910 | 0.501 | 14.527 | 1 | <0.001 | 6.755 | 2.529 | 18.039 |
| LVEF | 1.930 | 0.541 | 12.701 | 1 | <0.001 | 6.886 | 2.383 | 19.899 |
| APACHE II score | 2.053 | 0.533 | 14.833 | 1 | <0.001 | 7.788 | 2.740 | 22.135 |
| Length of ICU stay | 2.247 | 0.498 | 20.334 | 1 | <0.001 | 9.463 | 3.563 | 25.135 |
| Postoperative mechanical ventilation duration | 2.277 | 0.534 | 18.157 | 1 | <0.001 | 9.744 | 3.419 | 27.768 |
Notes: NYHA: New York Heart Association; LVEF: left ventricular ejection fraction; APACHE II: Acute Physiology and Chronic Health Evaluation II; ICU: intensive care unit.