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Table 1 Characteristics of COPD patients and healthy individuals

From: Increased levels of (class switched) memory B cells in peripheral blood of current smokers

 

COPD patients

Healthy individuals

 

Current smokers

Ex-smokers

Current smokers

Ex-smokers

Never smokers

Subjects (n)

10

10

9

10

10

Age (years)

65.9 (4.3) *

66.7 (7.4) *

52.8 (4.1) #

61.1 (9.3)

58.1 (6.5)

Packyears

34 (13.5) *

36.7 (18.2) *

24.6 (11)

20.6 (5.9)

0.3 (0.8)

FEV1 post BD

(% pred.)

44.9 (14.9)$

60.7 (14.7)

105.6 (8.7)

115.7 (15.9)

111.1 (12.1)

FEV1/FVC post BD (%)

37.6 (10)

43.8 (10.7)

76.4 (4)

78.2 (5.9)

78.5 (4.1)

  1. Mean (standard deviation) is depicted. Mann Whitney U tests were used to test differences between the groups. FEV1 = Forced expiratory volume in 1 second. FVC = Forced vital capacity. BD = Bronchodilator.
  2. * COPD patients versus healthy individuals; packyears p = 0.006, age p = 0.000
  3. # Healthy current smokers versus healthy ex-smokers p = 0.01 and versus healthy never smokers p = 0.045
  4. $ COPD smokers versus COPD ex-smokers p = 0.03