Table 4.

Correlation of Oscillometry with CT-derived metrics

	AX	Fres	X5	X5in	X5ex	XeE	XeI	XeE-XeI
TLCCT	0.387	0.216	0.387	0.356	0.389	0.303	0.536	0.095
PVV	0.271	0.116	0.168	0.116	0.178	0.148	0.690	0.314
ILD extent	0.230	0.135	0.141	0.133	0.156	0.119	0.615	0.265
% ground glass	0.298	0.197	0.217	0.208	0.228	0.152	0.538	0.222
% reticular	0.000	0.000	0.000	0.000	0.000	0.000	0.504	0.215
% honeycomb	0.000	0.014	0.000	0.000	0.000	0.000	0.038	0.098

Data are shown as the coefficient of determination, and R² was derived using polynomial with 2 degrees regression. Similar observations (not shown) were made using linear and exponential regression.

ILD extent=sum of %ground glass, %reticular and %honeycomb.

%, per cent predicted; PVV, pulmonary vessel volume; TLC_CT, total lung capacity measured by CT.