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Table 1 Baseline characteristics of the participants

From: Quality of life assessment in interstitial lung diseases:a comparison of the disease-specific K-BILD with the generic EQ-5D-5L

Characteristic

 

Total sample

Excluded

p-value

N = 268

Mean/%

Mean/%

Missing

 

229(85.5)

39 (14.5)

  

Sex n(%)

Male

154 (67.3)

22 (56.4)

0

0.1876

Age Mean (SD)

 

63.2 (12.9)

62.0 (13.6)

0

0.677

Education

Basic

99 (47.1)

15 (50)

9

0.6694

n(%)

Secondary

59 (28.1)

8 (26.7)

  

Higher

52 (24.8)

7 (23.3)

 

Employment

Full-time

57 (24.9)

11 (29.7)

2

0.1379

n(%)

Part-time

24 (10.5)

1 (2.7)

  

Unemployed

30 (13.1)

9 (24.3)

 

Retired

118 (51.5)

16 (43.2)

 

Smoking status

Current smoker

9 (3.9)

3 (8.1)

2

0.3797

n(%)

Former smoker

139 (60.7)

19 (51.4)

  

Never smoker

81 (35.4)

15 (40.5)

 

ILD subtypes

IPF

55 (24.0)

6 (15.4)

0

0.1145

n(%)

Sarcoidosis

51 (22.3)

7 (18.0)

  

Hypersensitivity pneumonitis

26 (11.4)

1 (2.6)

 

Other IIPsa

21 (9.2)

5 (12.8)

 

Others

76 (33.2)

20 (51.3)

 

DLCO% predicted Mean (SD)

 

44.2 (17.2)

44.2 (17.2)

17

0.3187

FVC % predicted Mean (SD)

77.4 (18.9)

53.1 (17.5)

4

<.0001

Mean number of comorbidities Mean (SD)

2.7 (1.8)

2.8 (2.0)

0

0.8936

EQ-5D-5L

Mean (SD)

EBVS

0.66 (0.17)

0.6 (0.2)

6

0.0320

VAS

61.4 (19.1)

49.1 (17.9)

5

0.0005

K-BILD

Total score

53.6 (11.7)

48.2 (10.7)

2

0.0166

Mean(SD)

Breathlessness and activity

41.1 (20.6)

31.6 (23.3)

0

0.0052

Chest symptoms

64.4 (22.2)

57.4 (22.4)

1

0.0920

Psychological impact

52.2 (13.8)

47.1 (12.1)

2

0.1014

  1. Percentages in the excluded group show the percent of valid answers. Abbreviations: SD Standard deviation, EQ-5D EBVS-EQ-5D experience based value set, VAS-Visual Analog Scale, IPF-idiopathic pulmonary fibrosis, IIP-idiopathic interstitial pneumonia, EBVS-experience based value. ainlcuding non-specific interstitial pneumonia, desquamative interstitial pneumonia, cryptogenetic organizing pneumonia, lymphocytic interstitial pneumonia, respiratory bronchiolitis-associated interstitial lung disease, pleuropulmonary fibroelastosis, and acute interstitial pneumonia