Table 4. Factors potentially influencing completion of medical powers of attorney and patient advance directives.

Variable and/or category	Medical power of attorney						Advance directive
	Univariate			Multivariate			Univariate			Multivariate
	OR	[95% CI]	p	OR	[95% CI]	p	OR	[95% CI]	p	OR	[95% CI]	p
Admitting department: surgical *1	1.11	[0.81; 1.52]	0.51	0.95	[0.65; 1.40]	0.80	1.40	[0.99; 1.98]	0.06	1.05	0.69; 1.59	0.83
Mode of admission: elective	1.42	[1.08; 1.86]	0.01	1.46	[1.05; 2.03]	0.02	1.76	[1.30; 2.37]	<0.01	1.62	[1.14; 2.31]	<0.01
Sex: male	1.01	[0.78; 1.30]	0.95	0.98	[0.74; 1.30]	0.89	1.08	[0.82; 1.42]	0.58	0.94	[0.69; 1.28]	0.70
Age	1.03	[1.02; 1.04]	<0.01	1.03	[1.01; 1.04]	<0.01	1.03	[1.02; 1.04]	<0.01	1.02	[1.01; 1.04]	<0.01
Marital status*2			<0.01			0.48			<0.01			0.46
– Divorced	0.85	[0.56; 1.28]	0.43	0.96	[0.62; 1.51]	0.87	0.60	[0.38; 0.95]	0.03	0.72	[0.44; 1.18]	0.19
– Widowed	1.56	[1.06; 2.30]	0.02	1.40	[0.91; 2.15]	0.12	0.95	[0.63; 1.43]	0.82	0.86	[0.55; 1.36]	0.53
– Cohabiting	0.85	[0.41; 1.77]	0.67	1.14	[0.51; 2.55]	0.76	0.74	[0.34; 1.62]	0.45	1.30	[0.55; 3.03]	0.55
– Single	0.51	[0.34; 0.75]	<0.01	0.85	[0.53; 1.36]	0.49	0.42	[0.27; 0.65]	<0.01	0.73	[0.43; 1.24]	0.25
Children: yes	1.34	[0.99; 1.82]	0.06	0.94	[0.65; 1.36]	0.75	1.61	[1.15; 2.25]	<0.01	1.15	[0.77; 1.73]	0.48
Previous disease: yes	2.61	[1.51; 4.52]	<0.01	1.31	[0.69; 2.50]	0.41	2.92	[1.52; 5.58]	<0.01	1.38	[0.66; 2.86]	0.39
Cardiac: yes	1.34	[1.04; 1.74]	0.03	0.95	[0.69; 1.30]	0.74	1.46	[1.11; 1.92]	<0.01	1.18	[0.84; 1.65]	0.34
Pulmonary: yes	1.35	[0.96; 1.90]	0.09	1.39	[0.95; 2.03]	0.09	0.98	[0.67; 1.42]	0.90	0.98	[0.65; 1.47]	0.91
Cancer: yes	1.42	[1.09; 1.83]	<0.01	1.27	[0.95; 1.72]	0.11	1.55	[1.17; 2.03]	<0.01	1.28	[0.93; 1.75]	0.13
Neurologic: yes	1.44	[0.93; 2.23]	0.10	1.39	[0.87; 2.24]	0.17	1.69	[1.08; 2.64]	0.02	1.55	[0.96; 2.52]	0.07
Medication consumption: yes	1.57	[1.12; 2.19]	<0.01	1.12	[0.76; 1.65]	0.57	1.51	[1.05; 2.16]	0.03	1.06	[0.70; 1.60]	0.79
Mode of life*2			0.84			0.16			0.95			0.69
Mode of life: at home with help	0.86	[0.47; 1.59]	0.64	0.60	[0.31; 1.16]	0.13	0.99	[0.52; 1.87]	0.98	0.78	[0.39; 1.56]	0.49
Mode of life: care/nursing home	0.79	[0.24; 2.64]	0.70	0.44	[0.13; 1.56]	0.20	0.80	[0.22; 2.98]	0.74	0.69	[0.18; 2.69]	0.59

*¹ Reference categories: Admitting department: internal medicine; Mode of admission: emergency; Sex: female; Marital status: married; Children: no; History of disease: none; Cardiac: no; Pulmonary: no; Cancer: no; Neurologic: no; Medication consumption: no; Mode of life: independent

*² “Global” Wald test

Rows in bold type indicate influential factors shown to be statistically significant in both univariate and multivariate analysis.

OR, odds ratio; 95% CI, 95% confidence interval