Table 4.
Univariate and multivariate Logistic regression analysis of the risk factors for long-term mortality.
| Univariate | Multivariate | |||
|---|---|---|---|---|
| OR (95%CI) | P value | OR (95%CI) | P value | |
| Pre-operation characteristics | ||||
| Male | 1.202 (0.553–2.610) | .642 | ||
| Age | 1.032 (1.002–1.064) | .037 | ||
| BMI | 1.089 (1.000–1.187) | .051 | ||
| Pre-op PaO2/FiO2 | 0.997 (0.994–1.001) | .158 | ||
| In-operation characteristics | ||||
| Operation time | 1.255 (1.024–1.537) | .028 | ||
| CPB time | 1.012 (1.004–1.020) | .003 | ||
| Aortic cross-clamping time | 1.015 (1.002–1.027) | .021 | ||
| DHCA time | 0.941 (0.867–1.023) | .153 | ||
| Post-operation characteristics | ||||
| Post-op PaO2/FiO2 | 0.994 (0.989–0.999) | .020 | ||
| PaO2/FiO2 before extubating | 0.991 (0.985–0.997) | .002 | 0.985 (0.977–0.993) | <.001 |
| MV time | 1.004 (0.997–1.010) | .237 | ||
| Neurological dysfunctions | 2.924 (1.469–5.823) | .002 | ||
| Delirium | 1.202 (0.553–2.610) | .642 | ||
| Stroke | 5.895 (1.774–19.589) | .004 | ||
| Paraplegia | 8.308 (1.989–34.692) | .004 | 10.994 (1.480–81.683) | .019 |
| Acute renal failure | 11.276 (5.062–25.118) | <.001 | 12.590 (4.694–33.769) | <.001 |
| Re-operation | 5.091 (2.069–12.526) | <.001 | 4.721 (1.363–16.360) | .014 |
| Re-admission to ICU | 5.895 (1.774–19.589) | .004 | 13.727 (2.967–63.498) | .001 |
BMI = body mass index, CI = confidence interval, CPB = cardiopulmonary bypass, DHCA = deep hypothermic circulatory arrest, ICU = intensive care unit, MV = mechanical ventilation, OR = odds ratio, Post-op = post-operation, Pre-op = pre-operation.