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Table 1 Demographic Characteristics of CWP and Control Groups

From: Alterations of serum biomarkers associated with lung ventilation function impairment in coal Workers: A cross-sectional study

Subjects

Numbers

Age

(yr, Mean ± SD)

Exposure duration

(yr, Mean ± SD)

CWP

34

58.2 ± 5.7

26.6 ± 5.4

Group 0+

11

57.0 ± 5.0

28.5 ± 7.4

Asymptomatic miners

24

57.8 ± 5.9

27.5 ± 6.8

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Environmental Health

ISSN: 1476-069X