Table 4.

Survival analyses for the primary end-point of all-cause mortality at 1 year

Variable	Univariate HR (95% CI)	Multivariate HR (95% CI)
Admission variables
eGFR (ml/min)	0.987 (0.978 to 0.996)**
Creatinine (mg/dl)	1.415 (1.100 to 1.820)**
BUN (mg/dl)	1.027 (1.017 to 1.036)***
BNP (100 pg/ml)	1.011 (0.995 to 1.028)
Discharge variables
eGFR (ml/min)	0.987 (0.978 to 0.996)**
Creatinine (mg/dl)	1.442 (1.147 to 1.814)**
BUN (mg/dl)	1.029 (1.020 to 1.038)***	1.024 (1.015 to 1.033)***
BNP (100 pg/ml)	1.028 (1.011 to 1.044)***
Change in renal function and BNP
ΔeGFR (ml/min)	1.000 (0.987 to 1.013)
ΔCreatinine (mg/dl)	1.222 (0.738 to 2.024)
ΔBUN (mg/dl)	1.016 (1.001 to 1.031)*
ΔBNP (100 pg/ml)	1.032 (1.005 to 1.060)*	1.036 (1.009 to 1.063)**

BNP: Brain Natriuretic Peptide; BUN: Blood Urea Nitrogen; CI: Confidence Interval; eGFR: estimated Glomerular Filtration Rate; HR: Hazard Ratio. Multivariate model is based on backward stepwise model with exclusion set at 0.1. Other variables included in the multivariate model are history of peripheral vascular disease and dementia; presence of valvular abnormalities; ejection fraction and QRS interval, and; use of angiotensin converting enzyme inhibitors and beta blockers at discharge.

^*p<0.05

^**p<0.01

^***p<0.001.