CRP and clinically amyopathic dermatomyositis: These factors included elevated on-admission disease activity (P < 0.001), lower DLCO% (P = 0.010), serum ferritin (P = 0.058), CRP (P = 0.037), hypertension (P = 0.065), allergic history (P = 0.058), treatment of steroid + IVIG (P = 0.038), and diagnosis of CADM (P = 0.038) (Supplementary Table 1).