Table 3. PFT findings of PM/DM associated ILD patients according to the relapse status.

Item	Relapse group (n=36)	Non-relapse group (n=38)	P value
FVC (L)	2.01 (1.19–3.48)	1.73 (0.95–2.78)	0.17
%FVC (%)	76.1 (60.7–100.6)	70.6 (44.8–113.2)	0.41
TLC (L)	3.89 (3.15–5.69)	3.22 (2.27–4.88)	0.10
%TLC (%)	90.9 (81–106.8)	82.2 (49.3–126.8)	0.36
%DLco (%)	94.8 (48.8–192.3)	60.7 (33.2–101.3)	0.11

Data are expressed as median (minimum to maximum). PM, polymyositis; DM, dermatomyositis; PFT, pulmonary function test; ILD, interstitial lung disease; FVC, forced vital capacity; %FVC, percent predicted forced vital capacity; TLC, total lung capacity; %TLC, percent predicted total lung capacity; %DLco, percent predicted diffusing capacity for carbon dioxide.