Table 3.

Multivariate analysis of 48-hour blood urea nitrogen, creatinine and oxygen level.

Parameter	Hazard Ratio	95% Hazard Ratio Confidence Limits	p-value
Creatinine	25.32	4.45-144.07	0.0003
Oxygen	0.81	0.71-0.92	0.002
Creatinine*	35.13	3.12-396.09	0.004
Blood urea nitrogen*	1.00	0.95-1.05	0.90
Blood urea nitrogen	1.05	1.00-1.09	0.04
Oxygen	0.84	0.74-0.94	0.004

^*redundant