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Table 1 Characteristics of healthy subjects and patients with COPD

From: Oxidative stress enhances the expression of IL-33 in human airway epithelial cells

 

Healthy subjects

COPD

Number

5

6

Male/Female

1/4

5/1

Age (years)

68.0 ± 3.4

68.0 ± 3.8

Ex-smoker/current smoker

0/0

6/0

Pack years

N/A

45.6 ± 8.5**

Lung function

 FEV1/FVC (%)

86.8 ± 3.3

62.7 ± 3.0***

 FEV1% of predicted (%)

108 ± 6.7

75.5 ± 6.7**

 DLCO/VA (%)

114 ± 4.2

85.2 ± 3.7***

  1. Data are presented as mean ± SEM
  2. **, *** represents, p < 0.01, p < 0.001 vs. healthy subjects
  3. Abbreviations: COPD chronic obstructive pulmonary disease, FEV 1 forced expiratory volume in 1 s, FVC forced vital capacity, DLCO/VA corrected carbon monoxide diffusing capacity by alveolar volume, N/A not applicable