TABLE 3

Results of Spearman's rank correlation coefficient for parameters of oscillometry and spirometry (n=80)

ParameterR5R20R5R20X5FresALX
VC−0.465**−0.437**−0.304**0.517**−0.562**−0.523**
FVC−0.450**−0.423**−0.291**0.506**−0.541**−0.509**
FEV1−0.485**−0.468**−0.306**0.497**−0.530**−0.497**
FEV1/FVC0.092NS0.041NS0.063NS−0.250*0.286*0.261*
IC−0.154NS−0.331**−0.127NS0.444**−0.504**−0.454**
IRV−0.144NS−0.128NS−0.076NS0.422**−0.530**−0.445**
ERV−0.551**−0.479**−0.474**0.406**−0.414**−0.403**
VT−0.355**−0.377**−0.176NS0.272*−0.232*−0.265*

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; R5 and R20: respiratory system resistance at 5 and 20 Hz, respectively; VT: tidal volume; VC: vital capacity; X5: respiratory system reactance at 5 Hz. NS: not statistically significant; *: p<0.05; **: p<0.01, as measured by Spearman's rank correlation coefficient.