Table 4. Results of multivariate analysis for prediction of independent risk factors.

Variables	p value	Odds ratio (95% CI)
Age	< 0.001	1.076 (1.047, 1.106)
Gender (Male)	0.201	0.718 (0.432, 1.193)
Low LVEF	0.372	0.797 (0.484, 1.312)
Diabetes mellitus	0.509	0.848 (0.519, 1.384)
Myocardial infarction	0.563	1.159 (0.703, 1.911)
COPD	0.124	1.972 (0.831, 4.679)
CPB use	0.003	2.110 (1.289, 3.456)
Number of distal bypass	0.190	1.225 (0.905, 1.659)
Extubation time	0.675	1.015 (0.947, 1.088)
Length of ICU stay	< 0.001	1.003 (0.996, 1.010)
Length of hospital stay	< 0.001	1.474 (1.292, 1.681)
Hematocrit level	0.943	1.003 (0.931, 1.080)
Transfused ES	0.323	1.130 (0.887, 1.439)
Inotrope requirement	0.148	0.411 (0.123, 1.370)
LCOS	0.602	1.625 (0.262, 10.084)

CI, confidence interval; COPD, chronic obstructive pulmonary disease; CPB, cardiopulmonary bypass; ES, erythrocyte suspension; ICU, intensive care unit; LCOS, low cardiac output syndrome; LVEF, left ventricular ejection fraction.

Results of multivariate logistic regression analysis of postoperative atrial fibrillation as the dependent variable.

The goodness of fit of the model in the logistic regression analysis was confirmed by a p-value of 0.688 in the Hosmer-Lemeshow test.