Table 6.

Proportional hazards model for predicting 6-month mortality^a

Factor	χ2	P-value	HR	HR 95% CI
DNR preference at 1 month	26.12	<.0001	6.88	3.28–14.41
Log of BNP (per doubling) at discharge	6.56	0.01	1.28	1.06–1.54
BUN at discharge	3.03	0.082	1.23	0.97–1.55
Serum sodium at discharge	1.48	0.22	0.96	0.91–1.02
In-hospital cardiopulmonary resuscitation	5.48	0.019	3.15	1.21–8.24

C-Index = 0.743, n = 228, events = 42.

BNP, brain natriuretic peptide; BUN, blood urea nitrogen; CI, confidence interval; DNR, do not resuscitate; HR, hazard ratio.

^aDeaths prior to 1 month are censored.