Abbreviations: FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; R5, resistance at 5 Hz; X5, reactance at 5 Hz; Fres, resonant frequency; Di5-20, difference of resistance at 5 Hz and 20 Hz; AX, area of reactance.

Table 3: Change on baseline in IOS parameters in BDR-positive and BDR-negative patients.