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Table 4 Multiple linear regression analysis of the summary score of the Severe Respiratory Insufficiency Questionnaire (SRI) in relation to patient care, family situation and autonomy level, adjusted for different variables (n = 127)

From: Living conditions and autonomy levels in COPD patients receiving non-invasive ventilation: impact on health related quality of life

  

95% CI

 

Regression coefficient

Lower limit

Upper limit

P value

Ambulatory care (respiratory specialist)

1.7

− 5.4

8.8

0.638

Age (per additional 10 years)

0.1

− 0.3

0.5

0.607

Family situation (alone vs. with family)

1.2

− 5.4

7.8

0.715

Occupational status*

− 14.8

− 25.0

− 4.6

0.005

Home environment (private home vs. nursing home)

4.8

 − 8.8

18.4

0.490

Rehabilitation

− 0.8

− 7.0

5.4

0.802

Respiratory specialist (yes vs. no)

2.2

− 4.9

9.3

0.547

Home environment (private home vs. nursing home)

4.4

− 8.7

17.5

0.508

Exacerbations (last 12 months)

− 7.2

− 12.6

− 1.9

0.008

Family situation

0.2

− 5.8

6.1

0.959

Level of autonomy impairment#

− 8.5

− 11.4

− 5.6

< 0.001

Home environment (private home vs. nursing home)

12.2

− 0.3

24.8

0.055

Level of autonomy impairment

− 6.5

− 8.7

− 4.3

< 0.001

Home environment (private home vs. nursing home)

13.9

1.2

26.6

0.032

Family situation (alone vs. with family)

1.2

− 4.8

7.1

0.693

  1. Significant values are marked in bold
  2. CI: confidence interval; * employed or able to work, retired, unemployable; # no impairments, significant impairments (level 2), serious impairments (level 3), most serious impairments (level 4)