TABLE 4

Results of univariate analysis for parameters of oscillometry and spirometry (n=80)

ParameterR5R20R5R20X5FresALX
std βAdjusted R2std βAdjusted R2std βAdjusted R2std βAdjusted R2std βAdjusted R2std βAdjusted R2
VC−0.4370.181**−0.4450.188**−0.3090.084**0.4670.208**−0.5200.262**−0.4390.183**
FVC−0.4180.164**−0.4250.170**−0.2950.075*0.4590.201**−0.5010.241**−0.4260.171**
FEV1−0.4490.192**−0.4590.201**−0.3130.087**0.4610.202**−0.4930.233**−0.4270.172**
FEV1/FVC0.072−0.008NS0.076−0.007NS0.041−0.011NS−0.1900.024NS0.2710.062*0.0310.019NS
IC−0.2900.072**−0.2190.037*−0.1680.006NS0.4180.164**−0.4800.221**−0.3800.134**
IRV−0.1350.005NS−0.149−0.010NS−0.069−0.008NS0.3440.087**−0.4500.192**−0.3230.093**
ERV−0.5050.245**−0.4860.226**−0.4150.162**0.3660.123**−0.3840.136**−0.3650.122**
VT−0.3240.093**−0.3440.107*−0.1990.028NS0.2910.073*−0.2720.062*−0.2540.053*

ALX: low-frequency reactance area; ERV: expiratory reserve volume; FEV1: forced expiratory volume in 1 s; Fres: resonant frequency; FVC: forced vital capacity; IC: inspiratory capacity; IRV: inspiratory reserve volume; NS: not significant; R5 and R20: respiratory system resistance at 5 and 20 Hz, respectively; std β: standardised regression coefficient; VT: tidal volume; VC: vital capacity; X5: respiratory system reactance at 5 Hz. *: p<0.05; **: p<0.01, as measured by univariate analysis.