Table 1 Baseline participant characteristics. Data are the number of cases or median (minimum–maximum)

Sex, male/female (n)

32/10

Age (years) (median (min–max))

72 (48–89)

BMI (kg/m²) (median (min–max))

27 (14–57)

Height (cm) (median (min–max))

170 (149–188)

Weight (kg) (median (min–max))

74 (47–200)

Primary pulmonary diagnosis

 COPD (n)

28

 Fibrosis (n)

12

 Asbestos lung disease and pleural plaques (n)

1

 Alveolar hypoventilation (n)

1

Oxygen therapy before ambulatory oxygen (yes/no)

12/30

Assistive technology (yes/no)

20/22

 Cane/crutches/walker (n)

18

 Wheelchair (n)

5

Comorbidities, ICD-10 group (median (min–max))

5 (1–10)

 IX: Cardiovascular (n)

33

 IV: Endocrine and metabolic (n)

26

 X: Other respiratory (n)

19

 XIII: Musculoskeletal (n)

13

 Other (II/VI/VII/VIII/XI/XII/XIV) (n)

7/10/6/1/5/6/5

Education

 Less than high school graduate (n)

17

 High school graduate (n)

18

 More than high school (n)

7

Employed/Retired

3/39

Smoking

 Current (n)

1

 Former (n)

34

 Never (n)

7

 Smoking pack-years (median (min–max))

30 (2–150)

Age of starting smoking (yrs.)

20 (9–34)

Mortality during the three-month follow-up (n)

2