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Table 1 Summary of demographics, spirometry, smoking history and medications1

From: Acute exacerbations of chronic obstructive pulmonary disease are associated with decreased CD4+ & CD8+ T cells and increased growth & differentiation factor-15 (GDF-15) in peripheral blood

Age (years) Sex FEV1 (% predicted) Smoking (pack-years) Smoking status # of AE-COPD during enrollment ICS use (Y/N) Home oxygen (Y/N)
67 M 52 108 Active 1 Y N
74 F 51 50 Former2 3 Y N
73 M 50 115 Former 1 Y Y
59 M 47 18 Former 1 Y Y
72 M 36 39 Former 2 Y Y
66 F 33 104 Active 1 Y Y
72 M 31 120 Active 1 Y Y
66 M 29 40 Active 1 N N
77 M 28 50 Former 1 Y N
58 M 26 25 Former 1 Y N
65 M 21 40 Former 1 Y Y
67 M 20 84 Active 1 Y Y
69 M 14 98 Former 3 Y Y
68.1 ± 5.61 11/2 33.7 ± 12.7 68.5 ± 36.9 8/5 1.38 ± 0.77 12/1 8/5
  1. 1Data are presented as average ± SD, except for sex ratios (M/F), smoking status (Former/ Active) and ICS use (Yes/No); M, male; F, female; ICS, inhaled corticosteroids; 2former smokers were defined as having quit for more than six months