Clinical Features of Dermatomyositis/Polymyositis with Anti-MDA5 Antibody Positivity

Table 3

Comparison of complications between the positive and negative groups (n (%)).

	Positive group (n = 18)	Negative group (n = 46)	χ ^2	P
Interstitial pneumonia	17 (94.4)	29 (63.0)	6.311	0.012
Pulmonary fibrosis	0 (0.0)	6 (13.0)	1.283	0.257
Infection	7 (38.9)	11 (23.9)	1.435	0.231

Note. Chi-square test.