Covariate |
Hazard ratio |
Standard error |
95% confidence interval |
P value |
Porcine root |
0.29 |
0.29 |
0.044 – 1.97 |
0.208 |
Mechanical valve |
0.52 |
0.46 |
0.092 – 2.96 |
0.462 |
Age |
1.02 |
0.022 |
0.98 – 1.07 |
0.214 |
Euroscore |
1.03 |
0.023 |
1.01 – 1.07 |
0.046 |
NYHA score |
1.03 |
0.20 |
0.70 – 1.50 |
0.894 |
Haemodynamic instability |
3.74 |
2.19 |
1.19 – 11.80 |
0.024 |
COPD |
2.12 |
1.13 |
0.74 – 6.03 |
0.159 |