Patients’ and partners’ health-related quality of life before and 4 months after coronary artery bypass grafting surgery

Table 8 Multiple logistic regression predicting partner’s post-operative physical and social functional dimension (PSFD)

Partner’s post-op physical and social functional dimension (PSFD) (dependent variable)							95.0% C.I
	Beta	S.E.	Wald	d	p	Lower	Upper
Partner pre-op (independent) variables
Step 1: chi square = 21.782, -2 Log Likelihood = 84.069, R = .238, Nagelkerke R ² = .325
EFD	-.021	.028	0.576	1	0.448	.927	1.034
PSFD	-.083	.038	4.783	1	0.029*	.845	.991
Step 2: chi square = 3.948,-2 Log Likelihood = 80.120, R = .275, Nagelkerke R ² = .375
EFD	.013	.034	.145	1	0.703	.948	1.082
PSFD	-.087	.040	4.618	1	0.032*	.847	.992
PCS	-.022	.027	.650	1	0.420	.928	1.032
MCS	-.058	.033	3.015	1	0.082	.884	1.007
Constant	7.185	1.920	13.998	1	0.001**	-	-
Patient pre-op (independent) variables
Step 1: chi square = 20.953, -2 Log Likelihood = 84.897, R = .230, Nagelkerke R = .314
PCS	-.062	.036	3.079	1	11.646	.876	1.007
MCS	-.089	.026	11.646	1	0.001**	.876	.974
Step 2: chi square = 3.501, -2 Log Likelihood = 81.385, R = .263, Nagelkerke R ² = .359
PCS	-.017	.052	0.103	1	0.748	.887	1.090
MCS	-.080	.030	6.961	1	0.008*	.870	.980
Physical limitation	-.038	.022	2.904	1	0.088	.922	1.006
Angina freq/severity	.026	.021	1.466	1	0.226	.984	1.070
Constant	4.357	1.680	6.728	1	0.009	-	-

EFD Emotion functional dimension, PSFD physical and social functional dimension, PCS physical component score, MCS mental component score, angina freq/severity angina frequency and severity, post-op post-operative * p < 0.005; ** p < 0.001.

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