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Table 1 Characteristics of the patients with dermatomyositis/polymyositis

From: Roles of mast cells in the pathogenesis of inflammatory myopathy

 

DM

PM

P value

n = 15

n = 12

Age, years

67.0 (45.5-70.0)

54.0 (36.0-63.0)

0.556

Sex, % female

12 (80)

12 (100)

0.108

Disease duration, months

3.00 (2.00-4.00)

3.25 (2.75-6.00)

0.798

Anti-nuclear Ab-positive, %

8 (53.3)

6 (50.0)

0.564

Anti-Jo-1-Ab-positive, %

2 (13.3)

1 (8.3)

0.817

CK, IU/l

2,913 (499-9,029)

1,929 (1,219-3,552)

1.000

MMT score, 0-90

76.0 (72.0-78.5)

75.0 (70.0-80.0)

0.814

Number of patients with ILD, %

6 (40.0)

4 (33.3)

0.734

Allergic disease, %

1 (6.67)

1 (8.33)

0.695

  1. Values shown are median (interquartile range). P values were calculated by the Wilcoxon test or Fisher’s exact test. Ab, antibody; CK, creatine kinase; DM, dermatomyositis; ILD, interstitial lung disease; MMT, manual muscle testing; PM, polymyositis.