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Table 1 Demographics of the study participants

From: Serum concentrations of Krebs von den Lungen-6, surfactant protein D, and matrix metalloproteinase-2 as diagnostic biomarkers in patients with asbestosis and silicosis: a case–control study

 

Asbestosis

Silicosis

DEWs

HCs

P value

n

43

45

40

45

 

Male: Female

19:24

23:22

21:19

22:23

0.879

Age, years

68.2 ± 8.6

65.1 ± 11.3

63.1 ± 8.7

65.6 ± 11.4

0.152

Smokers: nonsmokers

17:26

20:25

22:18

18:27

0.460

Current smoker: Exsmoker

6:11

8:12

13:9

11:7

0.275

Duration of exposure, years

7.4 ± 2.6

9.3 ± 3.1

7.8 ± 3.0

NA

0.107

FVC, predicted %

77.7 ± 23.4

79.2 ± 20.9

82.8 ± 18.2

83.3 ± 17.4

0.484

FEV1, predicted %

71.2 ± 12.5

77.1 ± 12.1

80.3 ± 11.5

80.8 ± 11.4

0.002

FEV1/FVC, %

75.5 ± 9.2

81.2 ± 8.0

81.7 ± 7.8

83.9 ± 11.7

<0.001

DLCO, predicted %

65.9 ± 14.1

74.3 ± 11.6

80.8 ± 7.8

80.6 ± 8.9

<0.001

Lung fibrosis scores

10.1 ± 6.4

NA

NA

NA

 
  1. P values were computed by chi-square test for sex and smoking status, and the one-way analysis of variance for age, duration of exposure and pulmonary function parameters. Significant results are highlighted in bold. NA not available