Exploring factors associated with bleeding events after open heart surgery in patients on dialysis − effects of the presence or absence of warfarin therapy

Table 5 Multivariate Cox proportional hazards regression analysis

	Item	EV	SE	HR	Lower 95% CI	Upper 95% CI	Reci-procal	p	AICc	BIC	p
Model 1 Age + BW + (Age × BW)	Age	0.167	0.114	1.182	0.967	1.531	0.846	0.115	36.590	40.895	0.100
	BW	-0.113	0.063	0.893	0.778	0.998	1.120	0.045
	(BW-59.762 kg) × (Age-70.974 years)	0.008	0.009					0.373
Model 2 Age + BW + (Age × BW) +WF	Age	0.169	0.113	1.185	0.972	1.530	0.844	0.103	38.778	44.256	0.162
	BW	-0.125	0.070	0.882	0.754	0.994	1.133	0.038
	(BW-59.762 kg) × (Age-70.974 years)	0.006	0.009					0.489
	WF	0.324	0.588	1.910	0.191	19.119		0.582

AICc, corrected Akaike information criteria; BIC, Bayesian information criteria; BW, body weight; CI, confidence interval; EV, estimated value; HR, hazard ratio; SE, standard error; WF, warfarin

ISSN: 2055-0294