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

Table 4 Multiple logistic regression predicting patient’s post-operative mental health (MCS)

Patient’s post-op mental health (MCS) (dependent variable)							95.0% C.I
	Beta	S.E.	Wald	d	p	Lower	Upper
Patient pre-op (independent) variables
Step 1: chi square = 24.744, -2 Log Likelihood = 86.109, R = .266, Nagelkerke R ² = .355
PCS	-.083	.034	5.875	1	0.015*	.861	.984
MCS	-.087	.025	11.90	1	0.001**	.872	.963
Step 2: chi square =1.842,-2 Log Likelihood =84.267, R = .324, Nagelkerke R ² = .377
PCS	-.108	.056	3.642	1	0.056*	.804	1.003
MCS	-.104	.033	10.065	1	0.002*	.845	.961
Physical limitation	-.005	.022	.047	1	0.769	.953	1.039
Angina freq/severity	.033	.024	1.862	1	0.172	.986	1.084
Constant	11.132	3.045	13.365	1	<0.001	-	-
Partner pre-op (independent) variables
Step 1: chi square = 5.794, -2 Log Likelihood = 105.060, R = .075, Nagelkerke R = .100
PCS	-.052	.023	5.314	1	0.021*	.910	.998
MCS	-.014	.022	4.791	1	0.514	.821	.908
Step 2: chi square = 12 .129,-2 Log Likelihood = 92.186, R = .208, Nagelkerke R ² = .268
PCS	-.032	.931	1.474	1	0.225	.924	1.028
MCS	-.020	.024	.731	1	0.398	.936	1.026
Gender	−2.559	1.106	5.355	1	0.021*	.008	.653
Social deprivation	−1.421	.676	4.440	1	0.035*	.062	.900
Constant	.946	1.333	.504	1	0.478	-	-

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

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