Table S2.

Any ILA or fibrotic ILA distributions across GOLD stages

Presence and type of ILA	GOLD stages						P-value
	0	1	2	3	4	U
Subjects with no ILA	787	163	173	58	13	48	0.45
Subjects with any ILA	75	17	23	6	0	8
Subjects with no fibrotic ILA	852	177	190	60	13	54	0.03
Subjects with any fibrotic ILA	10	3	6	4	0	2

Abbreviations: ILA, interstitial lung disease; GOLD, Global Initiative for Chronic Obstructive Lung Disease; U, unclassified.