Negative impact of chronic obstructive pulmonary disease on the health-related quality of life of patients. Results of the EPIDEPOC study

Table 4 Coefficients of the multiple linear regression equation for the final mental component of quality of life

Independent variables	Coefficients (95% CI)		Standard coefficients	Sig.
Constant	52.6	(50.5; 54.8)		<0.001
Sex	-5.71	(-6.57; -4.84)	-0.21	<0.001
FEV ₁	0.08	(0.04; 0.11)	0.09	<0.001
Oxygen therapy	-2.25	(-3.38; -1.13)	-0.07	<0.001
≤ 2 visits to E.R.	-0.63	(-0.86; -0.40)	-0.11	<0.001
≤ 2 hospital admissions	-1.01	(-1.49; -0.53)	-0.09	<0.001

R² = 0.11
Dependent variable: final mental component.
Variables excluded: size of the habitat, age, smoking, educational level, Body Mass Index.

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