Table 1.
Characteristics of the patients with dermatomyositis/polymyositis
|
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 |
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.