Table 3.
Univariate and multivariate Logistic regression analysis of the risk factors for postoperative hypoxemia.
| Univariate | Multivariate | |||
|---|---|---|---|---|
| OR (95%CI) | P value | OR (95%CI) | P value | |
| Pre-operation characteristics | ||||
| Male | 0.891 (0.439–1.808) | 0.750 | ||
| Age | 1.017 (0.991–1.044) | 0.212 | ||
| BMI | 1.183 (1.077–1.298) | <0.001 | 1.113 (1.011–1.226) | .030 |
| Pre-op PaO2/FiO2 | 0.993 (0.990–0.996) | <0.001 | 0.994 (0.991–0.998) | .001 |
| In-operation characteristics | ||||
| Operation time | 1.125 (0.933–1.357) | 0.217 | ||
| CPB time | 1.010 (1.002–1.019) | 0.011 | 1.009 (1.000–1.018) | .043 |
| Aortic cross-clamping time | 1.008 (0.997–1.020) | 0.163 | ||
| DHCA time | 1.028 (0.961–1.100) | 0.425 | ||
BMI = body mass index, CI = confidence interval, CPB = cardiopulmonary bypass, DHCA = deep hypothermic circulatory arrest, OR = odds ratio, Pre-op = pre-operation.