Table 3:

Univariate and multivariable regression analysis

			Univariate OR (95% CI)	P-value	Multivariable OR (95% CI)	P-value
Any postoperative organ dysfunction		BIa	1.005 (1.002, 1.009)	0.001	1.009 (1.005, 1.012)	<0.001
Postoperative cardiac dysfunction		BIa	1.013 (1.009, 1.017)	<0.001	1.014 (1.01, 1.019)	<0.001
Postoperative renal dysfunction		BIa	1.001 (1.001, 1012)	0.022	1.007 (1.001, 1.013)	0.013
			Univariate beta coefficient (95% CI)	P-value	Multivariable beta coefficient (95% CI)	P-value
ICU LOS		BIa	0.011 (0.01, 0.012)	<0.001	0.011 (0.01, 0.012)	<0.001

^aBI per unit.

OR: odds ratio; CI: confidence interval; BI: bypass index; ICU: intensive care unit; LOS: length of stay.