Table 2. The Outcomes Of Forward Stepwise Binary Logistic Regression And Odds Ratio.

Variables	β	SE	Wald	OR (95% CI)	p-value
pRBC transfusion	0.910	0.220	17.131	2.484 (1.614–3.821)	< 0.001
Previous COPD	3.026	0.932	10.530	20.613 (3.315–128.191)	0.001
Postoperative AF	1.732	0.855	4.100	5.653 (1.057–30.228)	0.043

pRBC: packed red blood cells, COPD: chronic obstructive pulmonary disease, AF: atrial fibrillation.