Table 2.

Results of the regression analysis: final models

		Bivariate regression analysis			Multiple regression analysis
Variable	Mean	β	F	P	β	F	P
Dependent variable: Decision regret of substitute decision-maker
Patients
Gender/male	33.86	−0.209	1.866	0.179	0.171	0.521	0.476
Gender/female	30.42
Survival/survived	30.83	0.034	0.048	0.827	−0.207	0.547	0.465
Survival/died	34.05
PEG placed	38.19	−0.423	8.732	0.005	0.796	9.925	0.004
PEG withheld	24.82
Patient can convey own wishes	25.00	−0.427	1.514	0.226	−0.411	1.873	0.182
Patient cannot convey own wishes	33.13
Substitute decision-makers
Gender/male	30.44	0.209	1.866	0.179	−0.071	0.068	0.797
Gender/female	33.61
Age		0.010	0.004	0.948	0.015	1.719	0.200
Relationship/child of patient	30.40	−0.099	0.409	0.526	0.126	0.237	0.630
Relationship/not child of patient	34.16
Consulted with
Medical staff	35.81	0.132	0.695	0.409	−0.166	0.215	0.646
Nobody	28.38
Physician’s recommendation
Either withhold or place PEG	35.20	−0.252	2.787	0.103	0.194	0.424	0.520
No recommendation	24.10
Decision conflict of substitute decision-makers		0.583	21.091	<0.001	0.625	21.945	<0.001

Gender: 1 = male, 2 = female

Survival: 1 = survived, 2 = died

PEG: 1 = PEG placed, 2 = withheld

Patient’s wishes: 1 = patient can convey own wishes, 2 = patient cannot convey own wishes

Relationship: 1 = child of patient, 2 = not child of patient

Consulted with: 1 = medical staff, 2 = nobody

Physician’s recommendation: 1 = either withhold or place PEG, 2 = no recommendation