Table 4.

Multiple Regression Model for Total ICU Length of Stay Outcome Variable

	Predictors	b	SE b	β	t	p	95% CI	Tolerance	VIF
Total ICU LOS	(Intercept)	4.802	0.426		11.283	< .001	[3.965, 5.638]
	Advance Directive	0.114	0.626	0.009	0182	.856	[−1.116, 1.344]	0.987	1.013
	Age	−0.148	0.036	−0.195	−4.078	< .001	[−0.220, −0.077]	0.987	1.013

ICU, Intensive Care Unit; LOS, Length of Stay