Parameter β t Sig. Morbidity     Model 1 CPB time 0.281 2.886 0.005   Clamping time 0.266 2.928 0.004   Prior PCI 0.256 3.169 0.002 Model 2 Prior PCI 0.286 3.041 0.003   Clamping time 0.264 2.809 0.006 Model 3 Prior PCI 0.273 2.808 0.006 Mortality     Model 1 Age 0.231 2.513 0.014   Clamping time 0.239 2.593 0.011   Prior PCI 0.293 3.187 0.002 Model 2 Clamping time 0.256 2.716 0.008   Prior PCI 0.289 2.716 0.002 Model 3 Prior PCI 0.263 2.894 0.005

Table 2: Regression analysis for evaluated parameters as predictors for postoperative morbidities and mortality. β: Standardized coefficient; Sig.: significance; PO: postoperative; CPB: cardiopulmonary time.