Fig. 4From: Clinical effects of direct hemoperfusion using a polymyxin B-immobilized fiber column in clinically amyopathic dermatomyositis-associated rapidly progressive interstitial pneumoniasKaplan–Meier comparison of survival curves in the anti-MDA-5 antibody positive and negative groups. There was a significant difference in 90-day survival between the anti-MDA-5 positive group (dotted line) and negative group (solid line) (p = 0.007)Back to article page