Table 4.

Factors associated with creating an informal contract with the patient describing agreed upon limitations of life supporting care

Characteristic	N	Would create an informal contract with the patient describing agreed upon limitations of LST (%)	Bivariate P-value	OR (95% CI)
Subspecialty
Vascular	322	65		Ref
Cardiothoracic	306	57	0.06	0.7 (0.5 – 0.9)*
Neurosurgery	266	62		0.8 (0.6 – 1.3)
Number of High Risk Operations performed/Month
0	33	42		Ref
1 – 5	305	64	0.09	2.7 (1.3 – 5.7)*
6 – 10	250	61		2.4 (1.1 – 5.2)*
11+	236	63		2.8 (1.3 – 6.0)*
Believe it is acceptable to withdraw LST POD #7
Never, rarely	444	57	0.01	Ref
Sometimes, always	444	65		1.0 (0.8 – 1.5)
Believe it is acceptable to withdraw LST POD #14
Never, rarely	127	43	<0.0001	Ref
Sometimes, always	760	64		2.1 (1.3 – 3.2)*
Concern about outcomes profiling	441	61	0.6	Not in model
Not at all/a little concerned	442	62		P>0.1
Somewhat/very concerned

^*denotes significance p<0.05