. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: J Crit Care. 2013 Oct 9;29(1):10.1016/j.jcrc.2013.08.023. doi: 10.1016/j.jcrc.2013.08.023

Table 2.

Variables associated with WMV

Variable	Frequency of withdrawal	Univariate OR (95% CI)	P value
Race
Nonwhite	144 (22%)	0.63 (0.51–0.78)	<.001
White	385 (31%)
Marital status
Married	269 (33%)	1.54 (1.25–1.90)	<.001
Unmarried	233 (24%)
Insurance: self-pay or Medicaid	165 (23%)	0.66 (0.54–0.82)	<.001
Private insurance or Medicare	377 (31%)
Admitted after elective surgery	14 (8%)	0.21 (0.12–0.36)	<.001
Admitted other reason	528 (30%)
Invasive ICU intervention	59 (14%)	0.34 (0.26–0.46)	<.001
No invasive ICU intervention	483 (32%)
Surgery or invasive intervention	94 (14%)	0.28 (0.22–0.36)	<.001
Neither	448 (36%)
Age (per year)		1.03 (1.02–1.04)	<.001
APACHE II (per point)		1.08 (1.06–1.09)	<.001
GCS, lowest (per point)		0.68 (0.64–0.73)	<.001