Table 3: Multivariate analysis (for predictors P<0.10).
| Outcomes/Predictors |
Ratios |
95% confidence interval |
P-value |
| Operative mortality |
|
|
|
| Cardiopulmonary bypass time (per minute) |
1.02 |
1.00-1.04 |
0.044 |
| Mortality during follow-up |
|
|
|
| Age (per year) |
1.11 |
1.02-1.20 |
0.018 |
| Critical pre-operative state |
2.85 |
0.904-8.97 |
0.074 |
| Composite morbidity |
|
|
|
| Congestive heart failure |
3.03 |
1.05-8.72 |
0.040 |
| Previous stroke |
8.87 |
0.849-92.8 |
0.068 |
| Ventilation>24 hours |
|
|
|
| Pulmonary hypertension (per category) |
2.19 |
0.959-5.02 |
0.063 |
| Return to theatre |
|
|
|
| Congestive heart failure |
5.93 |
0.975-36.0 |
0.053 |
| Previous cardiac surgery |
11.3 |
1.28-99.4 |
0.029 |
All ratios are odds ratios, except hazards ratios for predictors of mortality during follow-up.