Table 1

Clinical characteristics of the study subjects

ControlsEmphysema
Subjects n (M:F)12 (10:2)25 (20:5)
Age yrs62.8±4.661.9±5.3
FEV1 % pred90.2±2.748.7±13.1**
FEV1/FVC %81.8±3.142.0±8.5**
DL,CO %ND39.3±6.6
Sputum
 Total cell count ×104·mL−168.7±29.583.4±38.6
 Neutrophil count ×104·mL−114.7±6.732.6±17.3**
 Neutrophils %21.5±4.038.7±6.1**
  • Data are presented as mean±sd

  • M: male

  • F: female

  • FEV1: forced expiratory volume in one second

  • % pred: % predicted

  • FVC: forced vital capacity

  • DL,CO: carbon monoxide diffusing capacity of the lungs

  • ND: no data

  • **: p<0.01