Table 5

Number of subjects with abnormal (+) or normal (−) mixing ratios (MR) and lung clearance index (LCI) findings in relation to spirometry and plethysmography results

CFControls
MRLCIMRLCI
++++
FEV1
 +91910000
 −22111815028028
MEF50
 +1011010202
 −1211914024024
MEF25
 +1221220404
 −1010713022022
RV/TLC
 +1101100303
 −1212915024024
LCI
 +27000
 −412028
  • FEV1: forced expiratory volume in one second

  • MEF50: maximum expiratory flow at 50% of forced vital capacity

  • MEF25: maximum expiratory flow at 25% of forced vital capacity

  • RV: residual volume

  • TLC: total lung capacity