Table 2

Multivariate linear regression models between CT density and lung function

CT density	Lung function parameter	Unstandardised coefficient	SE
PD15	FEV₁pp	0.63	0.1 (p<0.001)
	FEV₁/FVC (%)	0.94	0.1 (p<0.001)
	Kcopp	0.55	0.1 (p<0.001)
Voxel index (%)	FEV₁pp	−0.48	0.1 (p<0.001)
	FEV₁/FVC (%)	−0.67	0.1 (p<0.001)
	Kcopp	−0.5	0.8 (p<0.001)

Data are shown for the regression analysis of both CT parameters and baseline lung function. ‘pp’ is the per cent predicted.
FEV₁, forced expiratory volume in 1 s; FVC, forced vital capacity.