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Table 1 Characteristics of the control and patient groups

From: Smad gene expression in pulmonary fibroblasts: indications for defective ECM repair in COPD

  Control Stage II Stage IV
Number of subjects 5 9 9
Age (years) 62 (36–63) 70 (44–81) 55 (44–61)
Smoking (Ex/C) 2/3 5/4 9/0
Pack-years 13 (0–75) 30 (8–58) 30 (17–54)
FEV1 % predicted 86 (83–108) 73 (50–76) 19 (13–29)
FEV1/FVC % pred 73 (70–81) 55 (37–68) 35 (24–66)
  1. All values are presented as median values with ranges in parentheses. Ex = ex smokers, not smoking for at least one year, C = current smokers; FEV1 % predicted = Forced Expiratory Volume in 1 second as percentage of predicted value; FVC = forced vital capacity; pred = predicted. Stage means severity of COPD according to GOLD criteria.