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Table 2 Selected characteristics of the construction workers

From: Association of genes of protease-antiprotease balance pathway to lung function and emphysema subtypes

 

Mean (SD) or N (%)

Age, years

63.2 (7.3)

Male sex

935 (98.3%)

Smoking history

 

  Never smoker

135 (14.2%)

  Ex-smoker

595 (62.6%)

  Current smoker

221 (23.2%)

  Pack years

20.4 (16.7)

Years of asbestos exposure (n = 943)

23.9 (10.7)

Emphysema score (n = 352 * )

2.00 (2.38)

  Centrilobular (n = 228)

1.23 (1.01)

  Paraseptal (n = 170)

1.00 (0.91)

  Panlobular (n = 168)

0.93 (0.87)

  Bullae (n = 126)

0.70 (0.77)

Lung function

 

  FEV1 (n = 925)

83.4 (18.6)

  FVC (n = 921)

89.1 (15.9)

  FEV1/FVC ratio (n = 921)

93.5 (12.8)

  MEF50 (n = 923)

65.9 (29.5)

  1. FEV1 = Forced expiratory volume in 1 second, % predicted; FVC = forced vital capacity, % predicted; FEV1/FVC ratio = FEV1/FVC x 100; MEF50 = maximal expiratory flow at 50% of forced vital capacity, % predicted; SD = standard deviation, n = 951 except as otherwise noted.
  2. *Subjects with emphysema sum score >0.
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BMC Pulmonary Medicine

ISSN: 1471-2466

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