Table 4.

Multivariable logistic and Cox proportional hazards regression analysis of mortality by time period.

Time of admission	In-hospital mortality		1-year mortality		5-year mortality
	OR (95% CI)	P value	OR (95% CI)	P value	OR (95% CI)	P value
24:00 to <06:00	Reference	.507	Reference	.944	Reference	.529
06:00 to <12:00	0.568 (0.198-1.632)		0.990 (0.400-2.449)		0.652 (0.370-1.149)
12:00 to <18:00	0.811 (0.394-1.669)		0.889 (0.374-2.113)		0.724 (0.425-1.234)
18:00 to <24:00	0.628 (0.320-1.231)		1.079 (0.422-2.758)		0.751 (0.415-1.361)