Table 6.

Multivariable Cox regression analysis for ICU and hospital mortality grouped by CPB time

Variable	Crude			Model 1			Model 2
	HR (95%CIs)	P value		HR (95%CIs)	P value		HR (95%CIs)	P value
ICU mortality
CPB time/ per10 minutes	1.06 (1.03–1.09)	< 0.001		1.06 (1.03–1.09)	< 0.001		1.13 (1.07–1.20)	< 0.001
Hospital mortality
CPB time/ per 10 min	1.04 (1.02–1.06)	< 0.001		1.041 (1.2–1.07)	< 0.001		1.093 (1.05–1.11)	< 0.001

Model1: The results were adjusted by age, gender, BMI;

Model2: The results were adjusted by age, gender, BMI, smoking, hypertension, diabetes, cerebrovascular disease, chronic lung disease, coronary heart disease, valve disease, ACEI, β_blocker, CCB, aspirin, statins, preoperative LVEF, NYHA, operation type, aortic clamping time, operation time, blood loss, transfusion of RBC