Fig. 1

Survival curves for patients with polymyositis/dermatomyositis-interstitial lung disease (PM/DM-ILD) over the observation time. a Frequency of infections and malignancies in patients with PM/DM-ILD up to 6 months after initiating immunosuppressive therapy and within three years before and after diagnosis of PM/DM in the overall observation period (gray columns). Frequency of the patients with PM/DM who died from infection and malignancy within 6 months and in the overall observation period (black columns) are also shown. b The survival curve for the patients with PM/DM-ILD. It shows that there are two phases with a high rate of death. c The survival curves for each PM/DM subtype reveals no significant difference among the three subtypes. CADM clinically amyopathic dermatomyositis