Quality of life among patients with cardiac disease: the impact of comorbid depression

Table 5 Regression coefficients (dependent variables PCS and MCS)

QOL Component	Variable	Coefficient (β_i)	\( se\left({\overset{\wedge }{\beta}}_i\right) \)	p-value
PCS	Constant	44.96	2.016	≤ 0.001
	Age	−0.114	0.030	≤ 0.001
	Sex	− 0.659	0.783	0.401
	Ethnicity	−0.340	0.559	0.543
	Comorbidities	−1.643	0.527	0.002
	PHQ category	−2.09	0.390	≤ 0.001
MCS	Constant	51.73	2.193	≤ 0.001
	Age	0.070	0.033	0.033
	Sex	−2.624	0.852	0.002
	Ethnicity	−0.782	0.608	0.199
	Comorbidities	−0.548	0.574	0.340
	PHQ category	−5.856	0.424	≤ 0.001

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