Table 4.

Multivariable logistic regression analysis for risk of major morbidity in the blood-prime group

Variable	B	SE	OR	95% CI	P value
CPB duration (minutes)	0.011	0.004	1.011	1.004 to 1.018	0.003
Blood storage time (days)	0.161	0.069	1.175	1.026 to 1.345	0.020
Constant	-4.122

b = regression coefficient; C.I. = confidence interval; CPB = cardiopulmonary bypass; OR = odds ratio; SE = standard error