Table 3.

—Standardized Estimates From Ordinary Least-Squares Regression of ICU Length of Stay on Patient and Family Caregiver Variables (N = 466)^a

Variables	β (B)	SE B	β	t	P Value
Patient
Age, y	-0.02	0.03	-0.03	-0.51	.61
Living will (0 = no, 1 = yes)	-0.89	1.24	-0.35	-0.72	.47
ICU admitting unit (0 = MICU,  1 = non-MICU)	3.96	0.96	0.19	4.14	.0001
Study group (0 = control, = experimental)	0.81	0.98	0.04	0.82	.41
Caregiver
Race (0 = white, 1 = nonwhite)	-0.17	0.99	-0.01	-0.17	.87
Relationship to patientb
Child	-1.16	1.16	-0.05	-0.10	.32
Parent	-1.66	1.47	-0.07	-1.13	.26
Other	1.07	1.33	0.04	0.80	.42

Model: R² (adj) = 0.031, F_8,471 = 2.92, P = .003. B = slope; SE B = standard error of B. See Table 1 for expansion of other abbreviation.

^aOriginal sample size was reduced for analyses because of missing data for some variables.

^bReference group for dummy coding was Spouse.