TABLE 5

Results of Spearman's rank correlation coefficient for high-resolution computed tomography scores, oscillometry, and spirometry (n=80)

ParameterAirspace consolidationHoneycombingArchitectural distortionTraction bronchiectasisInterstitial fibrosis
Oscillometry
R50.005NS−0.080NS−0.041NS−0.072NS−0.119NS
R20−0.057NS−0.114NS−0.059NS−0.092NS−0.153NS
R5R200.065NS−0.078NS−0.008NS−0.048NS−0.096NS
X5−0.375**−0.264**−0.345**−0.297**−0.206NS
 Fres0.435**0.296**0.396**0.348**0.236*
 ALX0.396**0.285**0.366**0.324**0.222*
Spirometry
 VC−0.386**−0.271**−0.393**−0.373**−0.181NS
 FVC−0.406**−0.259**−0.386**−0.371**−0.159NS
 FEV1−0.350**−0.181NS−0.329**−0.301**−0.100NS
 FEV1/FVC0.438**0.413**0.459**0.436**0.293**
 IC−0.421**−0.301**−0.415**−0.431**−0.199*
 IRV−0.492**−0.367**−0.465**−0.496**−0.297**
 ERV−0.181NS−0.074NS−0.172NS−0.124NS−0.031NS
VT−0.121NS−0.068NS−0.142NS−0.196NS0.013NS

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; VT: tidal volume; VC: vital capacity; X5: respiratory system reactance at 5 Hz. *: p<0.05; **: p<0.01, as measured by Spearman's rank correlation coefficient.