Table 2.

Summary of regression analysis data. The normal distribution of all datasets were analysed and confirmed using the Chi square goodness-of-fit method (data not shown). R squared values were calculated using the least squares linear regression analysis. The significance of the correlation were analysed using ANOVA test

	Correlation to CD248 relative staining area	R squared values (least squares linear regression)	Significance of correlation (ANOVA)
Demographics/clinical data	Age	0.097	0.156
	Smoking (pack-years)	0.084	0.226
Lung function data	TLC	0.432	0.005
	FVC	0.358	0.003
	FEV1	0.392	0.002
	TLCO	0.455	0.008