Table 3

Predictors of Mortality on Multivariate Analysis

Hazard Ratio Mortality (95% CI)p Value
Center volume0.005
 ≤101.32 (1.11–1.56)0.001
 11–301.07 (0.95–1.21)0.25
 31–50Reference
 >501.17 (1.03–1.30)0.016
Age >69 yrs1.64 (1.46–1.84)<0.001
BTT (listed)0.69 (0.59–0.80)<0.001
Males0.84 (0.75–0.94)0.003
Previous cardiac surgery1.42 (1.29–1.57)<0.001
Pre-operative ventilator support1.08 (0.88–1.32)0.48
Patient profile 1 or 21.21 (1.10–1.34)<0.001
Creatinine, mg/dl1.18 (1.13–1.23)<0.001
Albumin, g/l0.88 (0.82–0.95)0.001
CF-AF0.82 (0.71–0.96)0.012
Concomitant surgery1.25 (1.13–1.38)<0.001
BiVAD2.22 (1.78–2.78)<0.001

Abbreviations as in Table 1.

  • p values were derived from comparisons with medium volume. All variables were added simultaneously in Cox modeling.