Table 3

 Sensitivity index of spirometry and oscillometry measurements

Change (visit 3–visit 1)Coefficient of variation (%)Sensitivity index
FEV, forced expiratory volume in 1 s; %FL, percentage flow limitation; IC, inspiratory capacity; Rrs, resistance of the respiratory system; VC, vital capacity; Xrs, reactance of the respiratory system.
This analysis uses percentage change rather than percentage predicted values for spirometry in order to be comparable with the coefficient of variation.
Spirometry (% change)
Oscillometry (% change)