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Table 2 Prevalence of applied risk factors stratified by method of investigation (chest X-ray or MDCT)

From: Radiological surveillance of formerly asbestos-exposed power industry workers: rates and risk factors of benign changes on chest X-ray and MDCT

 

Mean

Std. Dev.

Median

Minimum

Maximum

Chest X-ray

     

Age (years)

57.0

11.5

58.0

27.0

90.0

TSFEa (years)

32.4

10.9

31.0

3.0

65.0

Exposure duration (years)

21.3

10.1

20.0

<1

53.0

Cumulative exposure (fibre years)

42.2

129.5

4.9

<1

2331.4

Smoking (pack years)

19.7

22.5

14.0

0

136.5

Low-dose MDCT

     

Age (years)

65.8

6.1

65.5

41.0

84.0

TSFEa (years)

41.2

7.4

41.0

20.0

57.0

Exposure duration (years)

29.8

7.5

30.0

4.0

46.0

Cumulative exposure (fibre years)

78.6

216.6

18.0

<1

2558.2

Smoking (pack years)

43.2

27.9

41.0

0

118

  1. atime since first exposure.