Table 2. Higher admission BUN levels are associated with adverse in-hospital outcome.

Hazard ratios (HR) were obtained by logistic regression analysis.

BUN	HR	95%CI	p-value
10–20 mg/dL	1.00
20–40 mg/dL	2.32	1.75–3.08	<0.001
>40 mg/dL	6.05	4.63–7.90	<0.001
>28 mg/dL	4.16	3.39–5.10	<0.001