Table 2.
Univariate Cox regression analysis of mortality
| Variable | Hazard ratio | 95% CI | P value |
|---|---|---|---|
| Sex | |||
| Male | Reference | ||
| Female | 1.4 | 0.09-22.4 | .813 |
| Age at surgery (y) | 0.79 | 0.16-3.86 | .769 |
| Weight at surgery (kg) | 0.38 | 0.13-1.1 | .074 |
| BAV | Cannot calculate | ||
| Aortic z score | 1.08 | 0.54-2.17 | .83 |
| Mitral z score | 0.92 | 0.33-2.55 | .867 |
| LV mass (g) | 0.68 | 0.34-1.36 | .279 |
| LV mass z score | 0.81 | 0.35-1.88 | .62 |
| AA z score | 1.1 | 0.82-1.47 | .523 |
| Primary operation No. (1) | Cannot calculate | ||
| Arch reconstruction | 0.48 | 0.03-7.67 | .602 |
| RV-PA Conduit Size (mm) | 0.86 | 0.36-2.03 | .727 |
| Material RV-PA | |||
| Aortic | Reference | ||
| Pulmonary | 0.96 | 0.06-15.3 | .975 |
| CPB time (min) | 1.02 | 0.98-1.06 | .252 |
| Crossclamp time (min) | 1.04 | 0.96-1.14 | .348 |
| Circulatory arrest time (min) | 1.05 | 0.93-1.19 | .441 |
| SACP (min) | 0.99 | 0.96-1.03 | .656 |
| Cooled to (°C) | 0.87 | 0.39-1.95 | .731 |
| Days intubated | 1.3 | (0.84, 2.02) | .241 |
| ICU LOS (d) | 1 | (0.97, 1.03) | .921 |
| Total Hospital LOS (d) | 1.01 | (0.97, 1.06) | .563 |
CI, Confidence interval; BAV, bicuspid aortic valve; LV, left ventricle; AA, aortic atresia; RV-PA, right ventricle to pulmonary artery; CPB, cardiopulmonary bypass; SACP, selective antegrade cerebral perfusion; ICU, intensive care unit; LOS, length of stay.